Cambridge A Level Thinking Skills 9694 — 2019 Oct/Nov Paper 1 · Variant 1

This document consists of 19 printed pages and 1 blank page. IB19 11_9694_11/3RP © UCLES 2019 [Turn over  Cambridge Assessment International Education Cambridge International Advanced Subsidiary and Advanced Level THINKING SKILLS 9694/11 Paper 1 Problem Solving October/November 2019 1 hour 45 minutes Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. There are 30 questions on this paper. Answer all the questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in pencil on the separate answer sheet. Read very carefully the instructions on the answer sheet. Ignore responses numbered 31– 40 on the answer sheet. DO NOT WRITE IN ANY BARCODES. INFORMATION FOR CANDIDATES Each correct answer will score one mark. A mark will not be deducted for a wrong answer.

2 © UCLES 2019 9694/11/O/N/19 1 Shaaron and her two sisters, Anna and Bonnie, have apps on their phones so that at any moment Shaaron can see the distance in kilometres between her and each of her two sisters. Shaaron looks at her phone and sees: Anna 15 km away from you Bonnie 20 km away from you Which of these cannot be the distance between Anna and Bonnie? A 10 km B 20 km C 30 km D 40 km 2 Penthesilea has three girdles to send to her sister, Hippolyta. She could put them in one, two or three parcels. The girdles weigh 0.8 kg, 1.9 kg and 8.0 kg. The postage rates are Not exceeding Price 1 kg $7 2 kg $10 5 kg $17 10 kg $23 20 kg $35 What is the minimum total price to post all three items? A $30 B $33 C $35 D $40

3 © UCLES 2019 9694/11/O/N/19 [Turn over 3 In the sport of targetball a goal scores 1 point, 2 points or 5 points, depending upon where the ball hits the goal target. The table below lists all the players who played for the Shorwell Sharpshooters last season, together with their statistics for the season. Name Matches played Goals Points scored Carl Breeze 20 30 68 Quentin Cumber 17 25 66 Leslie Finn 22 36 75 Vernon Gann 6 7 18 Andrew King 23 27 78 Ben Lowe 17 28 63 Richard Mee 28 33 71 Denzil Nye 14 18 43 Michael Ocean 25 31 76 Tom Potts 14 21 54 Edward Sterne 15 18 40 Simon Tate 9 11 27 Separate lists are produced for most matches played, most goals and most points scored. Which player appears in the top three of all three lists? A Leslie Finn B Andrew King C Richard Mee D Michael Ocean

4 © UCLES 2019 9694/11/O/N/19 4 A sculpture in the centre of the local park is made from three identical cubes. The views from the north and east are shown below. What does the sculpture look like from above? 5 Four online retailers are offering special deals to customers buying video games. The offers available are shown in the following table. Company Offer Cost of 1 game Cheap Videos Buy 2 get a third one free $15 Dollarland 10% off everything $11 Fun City Buy 3 get a fourth one free $13 Games4all 2 for the price of 1 $19 Jackson has been saving up and he intends to buy 12 video games. He will buy all the video games from the same retailer. Which retailer should Jackson choose for the cheapest possible cost? A Cheap Videos B Dollarland C Fun City D Games4all

5 © UCLES 2019 9694/11/O/N/19 [Turn over 6 In a class of 21 pupils, each pupil chose one favourite subject out of science, history and geography. Which one of these pie charts, suitably labelled, could represent the results?

6 © UCLES 2019 9694/11/O/N/19 7 In the year when Charlotte was born there were 5 Mondays in July. There are 31 days in the month of July. Which one of the following must have been true in the year when Charlotte was born? A There were exactly 4 Saturdays in July B There were 5 Tuesdays in July C 2nd July was not a Wednesday D 3rd August was not a Saturday 8 The Codray Swimming Club has its own pool, for use by members only. The club has 400 members. A survey was carried out last week of how frequently members used the pool. The results were as follows: Age group Number of members who used the pool last week: Never Once Twice More than twice Under 25 8 15 54 23 25 – 39 15 42 61 32 40 – 64 21 35 24 10 65+ 14 26 15 5 What percentage of the members under 40 used the pool more than once last week? A 46% B 56% C 62% D 68%

7 © UCLES 2019 9694/11/O/N/19 [Turn over 9 Fred went to a carpet shop and bought two carpets for $299 each and underlay for $140. He paid 1/6 of the total cost when he bought them and the rest in 12 equal monthly instalments. How much did he pay each month? A $10.25 B $30.49 C $51.25 D $61.50 10 Septimus has a seven-sided coin. He turns it over from right to left in front of him, rotates it 3/7 turn clockwise, turns it over again in the same way, and then turns 1/7 anticlockwise. This is the same as a clockwise turn by which of the following? A 2/7 B 3/7 C 4/7 D 5/7 11 A Jeweller creates the following record of his stock while auditing his safe one day. Items of Silver Gold Platinum Total weight 5000 g 2500 g 1000 g Value per gram $10 $30 $25 Which of the following charts represents the value of each of the materials?

8 © UCLES 2019 9694/11/O/N/19 12 Mr and Mrs Black want to stay at the Hotel Costa for 7 nights in July, on half board with a full sea view room. HOTEL COSTA Hotel prices are in dollars per person. Mar Apr May Jun Jul Aug Sep Oct Nov 7 nights 399 419 449 479 499 519 479 449 399 14 nights 739 799 869 899 939 999 899 869 739 Supplements per person per night in dollars. Low Season Medium Season High Season Half board 15 20 25 Full board 25 30 35 Supplement per room per night in dollars Side sea view 15 Full sea view 30 Low Season Medium Season High Season March, April, November May, June, September, October July, August How much will their stay at the hotel cost? A $1383 B $1453 C $1558 D $1768

9 © UCLES 2019 9694/11/O/N/19 [Turn over 13 Liam works for Cars2Go, selling cars. He was given a target of selling 160 silver cars during the first four months of 2014. The following table shows the running total of the number of silver cars that he had sold by the end of each month. Month January February March April Total number of silver cars sold since January 1st 12 50 86 136 Which one of the following pie charts, suitably labelled, could represent the number of silver cars that Liam sold each month? 14 Clare has invented a new way of judging cats. She awards each cat a score for each property. The scores can be positive, negative or zero. Each cat’s average score must be zero and the average score for each property must be zero. Gladys Hamish Poppy Thunder Friendliness 3 –4 Beauty 0 Cuddliness 1 Furriness 2 –3 How many more scores does Clare need to give before someone else would be able to work out all the scores? A 3 B 4 C 9 D 10

10 © UCLES 2019 9694/11/O/N/19 15 Meg and Dave are a married couple. On Saturday afternoons, Meg goes to orchestra practice while Dave stays at home. He watches television and then prepares and cooks dinner for them both. The practice begins at 14:00 and lasts at least 4 hours, but no more than 4 hours 30 minutes. Meg’s drive home takes between 30 minutes and 45 minutes, depending on the traffic. Today Dave is cooking a meal that will take him 25 minutes to prepare, followed immediately by 50 minutes cooking time. The meal will be spoilt if they do not start eating it within 15 minutes of cooking being complete. What is the earliest time that Dave can begin preparing the meal so as to be certain that Meg will be home in time to eat it? A 17:00 B 17:45 C 18:00 D 18:15

11 © UCLES 2019 9694/11/O/N/19 [Turn over 16 Fred does not drive and so he regularly uses taxis. There are three local taxi firms – Quickhops, Big Green Taxis and Simply Cars. For each journey, Fred always chooses the firm that will cost him the least. Quickhops charges $10 per journey, plus $0.50 for every kilometre. Big Green Taxis charges $20 for a journey up to 20 km, then an additional $0.25 for each further kilometre. Simply Cars charges $30 per journey, regardless of the distance. Which of the following graphs represents the amount that Fred pays for taxi journeys over different distances?

12 © UCLES 2019 9694/11/O/N/19 17 Two containers of equal volume are each filled with a mixture of juice and water. The ratio of juice to water in the first container is 2 juice : 3 water. The ratio in the second container is 9 juice : 1 water. The contents of the two containers are combined in a larger container which was previously empty. What is the ratio of juice to water in the larger container? A 13 : 7 B 11 : 4 C 3 : 1 D 6 : 1

13 © UCLES 2019 9694/11/O/N/19 [Turn over 18 Some homes have been fitted with ‘smart’ energy display devices which allow householders to monitor energy usage. The table below shows the energy consumption of various electrical devices in John’s house. Device Units per minute Kettle 7 Microwave 8 Room light 3 Shower 10 Television 9 Waking at 06:30, John switches the bedroom light on at 06:31. His wife switches on the shower at 06:34 and it remains on for 6 minutes. John switches on the kitchen light at 06:36. At 06:38 the kettle is switched on for 2 minutes. The microwave heats up the porridge for 4 minutes from 06:40 and the television is switched on at 06:44. Which of the displays below best represents the energy consumption over this period?

14 © UCLES 2019 9694/11/O/N/19 19 Yvonne needs to book an appointment to see the doctor this week. She works every day from Monday to Friday from 9 am until 6 pm, apart from Wednesday when she finishes work at 3 pm. She is able to take a one-hour lunch break each day, but it must not start before 11.30 am or finish after 2 pm. It takes Yvonne 10 minutes to travel between her work and the doctor’s surgery. Yvonne wants to book the appointment to keep the amount of time that she is away from work when she should be working as small as possible. She has been offered one of four possible appointment times. They are: Tuesday at 2.10 pm; Wednesday at 11.10 am or 1.40 pm; or Thursday at 3 pm. The appointment will last for 30 minutes. Which of the appointments should Yvonne choose? A Tuesday 2.10 pm B Wednesday 11.10 am C Wednesday 1.40 pm D Thursday 3 pm 20 Lin is going on a long-distance flight from Afar to Calo. The flight stops at Biffa on the route, and she transfers to an aeroplane for the rest of the trip to Calo that flies at a lower average speed than the one from Afar to Biffa. Lin has her schedule which details the departure time from Afar, the arrival and departure times for Biffa, and the arrival time at Calo. All these times are local times. Lin knows that the times in Biffa and Calo are ahead of the time in Afar, with Calo’s time being twice as far ahead as Biffa’s. Which of the following would enable Lin to calculate how many hours Calo’s local time is ahead of Afar’s? A The average speed between Afar and Biffa, and the average speed between Biffa and Calo B The flight distance between Afar and Biffa, and the flight distance between Biffa and Calo C The flight distance between Afar and Biffa, and the average speed between Biffa and Calo D The average speed between Biffa and Calo, and the flight distance between Biffa and Calo

15 © UCLES 2019 9694/11/O/N/19 [Turn over 21 A game is played with a set of 40 cards numbered 1–10 in each of the colours red, blue, green and yellow. Points are scored for the following combinations: Two cards of the same number: 2 points Run of three consecutive numbers: 3 points Two or more cards totalling twelve: 2 points The colour of the card is irrelevant and cards may be used multiple times in scoring points. Kascper has the red 5, the blue 5, the green 6 and the blue 6. He will take one more card before finding his score. Which of the following cards will give him the greatest score? A Yellow 4 B Yellow 5 C Yellow 6 D Yellow 7 22 Bill regularly travels from his home just outside Kimster to visit his father Charlie in Manter. To get there, he has to catch a bus to Kimster station, then a train to Manter station, and finally walk to Charlie’s house. Buses leave from the bus stop outside Bill’s home on the hour and at 15, 30 and 45 minutes past each hour. The journey time to the station is between 15 and 20 minutes. Fast trains leave Kimster station on the hour and at 30 minutes past each hour and take between 35 and 45 minutes to reach Manter station. Slow trains leave at 40 minutes past each hour and take an hour for the same journey. The walk from Manter station to Charlie’s house takes between 15 and 20 minutes. Bill wants to meet Charlie by 11:00 at the latest. What is the latest bus that Bill can catch from outside his home? A 09:00 B 09:15 C 09:30 D 09:45

16 © UCLES 2019 9694/11/O/N/19 23 A decorative table top is covered in tiles of three different sizes: small, medium and large. The masses of individual tiles of each size are 0.05 kg, 0.1 kg and 0.2 kg respectively. The ratio of the number of small tiles to the number of medium tiles is 2 : 5 and there are 10 times as many medium tiles as large tiles. Which one of the following pie charts could represent the total mass of each type of tile on the table top? 24 Jacques left Sachin’s house yesterday, walking homewards at 6 kilometres per hour. After 19 minutes, he realised that he had left his mobile phone behind. Immediately, he turned round to walk back, stepping up his pace to 9 kilometres per hour, unaware that Sachin had already been running at 15 kilometres per hour for 2 minutes, trying to catch him up. They continued at 9 kilometres per hour and 15 kilometres per hour respectively until they encountered each other. How far from Sachin’s house did they encounter each other? A 1025 metres B 1200 metres C 1375 metres D 1500 metres

17 © UCLES 2019 9694/11/O/N/19 [Turn over 25 In the team sport of Addon, 7 points are awarded for a goal. Whenever a goal is scored, the captain of the team that has scored has to decide whether or not to attempt to score an addon. If an addon attempt is successful an extra 3 points are awarded; if an addon attempt is unsuccessful, 2 points are deducted. Four matches were played last night in the National Addon League. According to one newspaper this morning, the results were as follows: Comets 26 Scorpions 38 Eagles 33 Bulls 29 Panthers 41 Giants 23 Rockets 46 Dragons 19 The published result of which one of last night’s matches cannot be correct? A Comets v Scorpions B Eagles v Bulls C Panthers v Giants D Rockets v Dragons 26 When asked for $3.53 at a shop yesterday, I pulled the loose change out of my pocket to discover that I had the following coins: 2 × $1 3 × 50¢ 4 × 20¢ 3 × 10¢ 2 × 5¢ 1 × 2¢ 5 × 1¢ I decided to pay the exact amount from this loose change, using as many coins as possible, to lighten the load in my pocket. How many coins did I have left after I had paid for my purchases? A 4 B 5 C 6 D 8

18 © UCLES 2019 9694/11/O/N/19 27 In a college there are 150 students. 40 of the students study science, 50 of the students study geography and 65 of the students study history. 12 students study all three of these subjects. What is the smallest possible number of students studying none of these three subjects? A 5 B 7 C 17 D 19 28 In a galaxy quite far away there live people who do not use numbers to display the time – they use letters instead. They have a 60-minute hour and a 24-hour day, just like us. They use the letters a to l to represent the numbers 1 to 12. The time is displayed using two 3-letter combinations: the first for the hours and the second for the minutes. Each 3-letter combination must be in alphabetical order. The hours or minutes are found by multiplying the values of their three letters together. For example, 08:55 might be written as aah:aek or bbb:aek. There are obvious limitations to this system, such as the inability to express 17 minutes past any hour. However, it is the preferred method of telling the time. How many different ways of writing 12:24 are there in this system? A 2 B 20 C 486 D 720 29 Cyril has to fill some 30-litre tanks with a certain liquid using four sources that are close together. The rate of flow of liquid in litres per minute from each source is shown in the table below. Source 1 Source 2 Source 3 Source 4 Rate of flow (litres/min) 12 8 6 4 Cyril has filled several tanks using all 4 sources simultaneously, when one of the sources dries up. Using the remaining 3 sources, it now takes 15 seconds longer to fill each tank. Which source drying up would explain this? A Source 1 B Source 2 C Source 3 D Source 4

19 © UCLES 2019 9694/11/O/N/19 30 Northbit and Southpart are villages on opposite banks of the River Tween. Every year teams from both villages take part in a tug-of-war across the river, until the losing team is pulled into the water. 25 years ago, Southpart had won exactly ¾ of the contests. However, following 16 wins in the last 25 years, Northbit have now increased their success rate to 40%. How many times have Northbit won the tug-of-war against Southpart? A 26 B 39 C 50 D 65

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This document consists of 3 printed pages. © UCLES 2019 [Turn over Cambridge Assessment International Education Cambridge International Advanced Subsidiary and Advanced Level THINKING SKILLS 9694/11 Paper 1 Problem Solving October/November 2019 MARK SCHEME Maximum Mark: 30 Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for Teachers. Cambridge International will not enter into discussions about these mark schemes. Cambridge International is publishing the mark schemes for the October/November 2019 series for most Cambridge IGCSE™, Cambridge International A and AS Level components and some Cambridge O Level components.

9694/11 Cambridge International AS/A Level – Mark Scheme PUBLISHED October/November 2019 © UCLES 2019 Page 2 of 3 Question Answer Mark 1 D 1 2 A 1 3 D 1 4 A 1 5 D 1 6 D 1 7 C 1 8 D 1 9 C 1 10 B 1 11 B 1 12 C 1 13 C 1 14 A 1 15 B 1 16 A 1 17 A 1 18 B 1 19 C 1 20 D 1 21 D 1 22 B 1 23 A 1 24 C 1 25 C 1 26 B 1 27 D 1 28 B 1

9694/11 Cambridge International AS/A Level – Mark Scheme PUBLISHED October/November 2019 © UCLES 2019 Page 3 of 3 Question Answer Mark 29 C 1 30 A 1