Cambridge IGCSE Mathematics (with coursework) 0581 — 2014 Oct/Nov Paper 3 · Variant 3

READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fl uid. DO NOT WRITE IN ANY BARCODES. Answer all questions. If working is needed for any question it must be shown below that question. Electronic calculators should be used. If the degree of accuracy is not specifi ed in the question, and if the answer is not exact, give the answer to three signifi cant fi gures. Give answers in degrees to one decimal place. For π, use either your calculator value or 3.142. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. The total of the marks for this paper is 104. MATHEMATICS 0581/33 Paper 3 (Core) October/November 2014 2 hours Candidates answer on the Question Paper. Additional Materials: Electronic calculator Geometrical instruments Tracing paper (optional) Cambridge International Examinations Cambridge International General Certifi cate of Secondary Education This document consists of 16 printed pages. [Turn over IB14 11_0581_33/FP © UCLES 2014 *2001559193* PAPA CAMBRIDGE

2 0581/33/O/N/14 © UCLES 2014 1 (a) A group of 20 boys were asked which type of movie they liked best. Each boy’s choice is shown below. Action Science Fiction Comedy Drama Comedy Horror Action Science Fiction Science Fiction Comedy Comedy Horror Comedy Horror Comedy Horror Action Action Horror Drama (i) Complete the frequency table for the results. You may use the tally column to help you. Type of movie Tally Frequency Action Horror Science Fiction Comedy Drama Total 20 [2] (ii) Draw a bar chart to show this information. Complete the scale on the frequency axis. Action Horror Science Fiction Comedy Drama Frequency [3]

3 0581/33/O/N/14 © UCLES 2014 [Turn over (b) A group of 24 girls were also asked which type of movie they liked best. The results are shown in the table below. Type of movie Frequency Action 5 Horror 3 Science Fiction 2 Comedy 6 Drama 8 One of these girls is picked at random. Find the probability that she liked comedy or drama best. Answer(b) … [1] (c) Khalid says: Comedy movies are equally popular with boys and girls. Is he correct? Give a reason for your answer. Answer(c) … because … … [1] (d) A group of 25 people were asked how many movies they had watched in the last two weeks. The results are shown in the table below. Number of movies 0 1 2 3 4 5 6 Frequency 4 6 5 3 5 0 2 (i) Find the median. Answer(d)(i) … [2] (ii) Calculate the mean. Answer(d)(ii) … [3] __________________________________________________________________________________________

4 0581/33/O/N/14 © UCLES 2014 2 (a) Lei earns $6.75 per hour. One week she works for 37 hours. How much does she earn this week? Answer(a) $ … [1] (b) One month Lei earns $1080. 20% of her earnings are taken off for tax. Show that the amount of money she has left is $864. Answer(b) [1] (c) Lei divides $864 in the ratio bills : spending money : savings = 9 : 4 : 2. (i) Work out how much spending money she has. Answer(c)(i) $ … [2] (ii) What fraction of the $864 does she use for bills? Give your answer in its simplest form. Answer(c)(ii) … [2]

5 0581/33/O/N/14 © UCLES 2014 [Turn over (d) Lei wants to buy a computer. (i) Computer $425 + sales tax The sales tax is 15%. Work out the total cost of this computer. Answer(d)(i) $ … [2] (ii) Lei goes on holiday to London. The exchange rate between dollars and pounds (£) is $1 = £0.52 . The total cost of the same computer in London is £235. Work out how much less, in pounds, the computer costs in London. Answer(d)(ii) £ … [2] (e) Lei inherits $1400. She spends $175 on a camera. (i) Work out $175 as a percentage of $1400. Answer(e)(i) … % [1] (ii) Lei invests the remaining $1225 for 3 years at a rate of 4.5% per year compound interest. How much interest does she receive after 3 years? Answer(e)(ii) $ … [3] __________________________________________________________________________________________

6 0581/33/O/N/14 © UCLES 2014 3 Sylvain leaves his house at 09 30 to cycle to Southfi eld Lake. He cycles for 4 km then waits for his friend Michel. Both boys then cycle to the lake together. The travel graph shows Sylvain’s journey. 20 18 16 14 12 10 8 6 4 2 0 09 30 10 00 10 30 11 00 11 30 12 00 12 30 13 00 13 30 14 00 Time Distance (km) Southfield Lake (a) Write down how long Sylvain waits for Michel. Answer(a) … min [1] (b) Is Sylvain’s speed faster before or after he meets Michel? Explain how you know. Answer(b) … because … … [1] (c) Write down the time Sylvain and Michel arrive at the lake. Answer(c) … [1]

7 0581/33/O/N/14 © UCLES 2014 [Turn over (d) Sylvain and Michel stay at the lake for 50 minutes. They then cycle back to Sylvain’s house at a speed of 10 km/h. (i) Find how long it takes them to cycle the 18 km back to Sylvain’s house. Give your answer in hours and minutes. Answer(d)(i) … h … min [2] (ii) Complete the travel graph. [2] (e) Manon plans to go to Southfi eld Lake by bus from High Street. Here is the bus timetable. Railway Station 08 45 09 15 09 45 10 15 10 45 11 15 High Street 08 57 09 27 09 57 10 27 10 57 11 27 Hospital 09 12 09 42 10 12 10 42 11 12 11 42 Southfi eld Lake 09 21 09 51 10 21 10 51 11 21 11 51 Country Park 09 50 10 20 10 50 11 20 11 50 12 20 (i) Manon arrives at Southfi eld Lake just before 11 30. Write down the time of the bus she caught from High Street. Answer(e)(i) … [1] (ii) How long does the journey from High Street to Southfi eld Lake take? Answer(e)(ii) … min [1] (f) Southfi eld Lake is 13 km from Manon’s house on a bearing of 110°. Mark the position of the lake on the scale drawing below. Use a scale of 1 centimetre represents 4 kilometres. North Manon’s house [2] __________________________________________________________________________________________

8 0581/33/O/N/14 © UCLES 2014 4 (a) A B G C D E F H 85° 30° NOT TO SCALE In the diagram, ABC and DEC are triangles. AB = BE and BED is parallel to GFH. Angle AEB = 85° and angle CBE = 30°. (i) Find angle EAB. Answer(a)(i) Angle EAB = … [1] (ii) Find angle ABE. Answer(a)(ii) Angle ABE = … [1] (iii) Find refl ex angle ABC. Answer(a)(iii) Angle ABC = … [1] (iv) Find angle BEC. Answer(a)(iv) Angle BEC = … [1] (v) Find angle EFH. Answer(a)(v) Angle EFH = … [1] (vi) Find angle BCE. Answer(a)(vi) Angle BCE = … [1]

9 0581/33/O/N/14 © UCLES 2014 [Turn over (vii) Complete the following statement. Triangle … is similar to triangle … [1] (b) For a regular 12-sided polygon, fi nd the size of (i) an exterior angle, Answer(b)(i) … [2] (ii) an interior angle. Answer(b)(ii) … [1] __________________________________________________________________________________________

10 0581/33/O/N/14 © UCLES 2014 5 y x 8 6 4 2 –2 –4 –6 –8 –10 0 –1 –2 –3 –4 3 2 1 L (a) The line L is drawn on the grid. (i) Work out the gradient of L. Answer(a)(i) … [2] (ii) Write down the equation of L in the form y = mx + c. Answer(a)(ii) y = … [1]

11 0581/33/O/N/14 © UCLES 2014 [Turn over (b) (i) Complete the table of values for y = 6 – 2x – x2. x –4 –3 –2 –1 0 1 2 3 y –2 3 3 –2 [3] (ii) On the grid opposite, draw the graph of y = 6 – 2x – x2 for –4 Y x Y 3. [4] (iii) Use your graph to solve the equation 6 – 2x – x2 = 0. Answer(b)(iii) x = … or x = … [2] (c) Write down the co-ordinates of the points of intersection of L with your graph. Answer(c) (… , …) and (… , …) [2] __________________________________________________________________________________________

12 0581/33/O/N/14 © UCLES 2014 6 In this question all lengths are in centimetres. ABC is an isosceles triangle. AC = 2x – 3 and BC = x + 2. (a) Write down an expression for AB. Answer(a) AB = … [1] (b) Write down and simplify an expression for the perimeter of the triangle. Answer(b) … cm [2] (c) A rectangle has length 3(x – 4) and width (14 – x). (i) Write down and simplify an expression for the perimeter of this rectangle. Answer(c)(i) … cm [2] (ii) The triangle and the rectangle have the same perimeter. Write down an equation and use it to fi nd x. Answer(c)(ii) x = … [2] (d) Find the length and width of the rectangle. Answer(d) Length = … cm Width = … cm [2] (e) Work out the area of the rectangle. Answer(e) … cm2 [1] __________________________________________________________________________________________ A B C 2x – 3 x + 2 NOT TO SCALE

13 0581/33/O/N/14 © UCLES 2014 [Turn over 7 Tables and chairs can be arranged in two different patterns. Pattern A Pattern B 1 table 2 tables 3 tables (a) Complete the following table. Number of tables 1 2 3 4 8 Number of chairs in Pattern A 6 8 Number of chairs in Pattern B 6 10 [5] (b) How many chairs are needed with n tables (i) in Pattern A, Answer(b)(i) … [2] (ii) in Pattern B ? Answer(b)(ii) … [2] (c) Sofi a needs to arrange tables to seat 66 people. Which pattern uses the least number of tables and by how many? Answer(c) Pattern … by … tables [3] __________________________________________________________________________________________

14 0581/33/O/N/14 © UCLES 2014 8 (a) Sweets are packed in a box. The cross section of the box is an equilateral triangle with side 4 cm. The length of the box is 8 cm. (i) Write down the mathematical name for the box. Answer(a)(i) … [1] (ii) Draw an accurate net for the box. Side AB has been drawn for you. A B [3] A B 8 cm 4 cm NOT TO SCALE

15 0581/33/O/N/14 © UCLES 2014 [Turn over (iii) The surface area of the box is 10 986 mm2. Change this surface area to square centimetres. Answer(a)(iii) … cm2 [1] (iv) The box contains 120 g of sweets, correct to the nearest 10 g. Write down the lower bound of the mass of sweets in the box. Answer(a)(iv) … g [1] (b) 3 cm 4 cm 10 cm NOT TO SCALE Another box of sweets is in the shape of a cylinder. The cylinder has diameter 3 cm and length 10 cm. (i) Calculate the volume of the cylinder. Answer(b)(i) … cm3 [3] (ii) A label of width 4 cm fi ts around the cylinder with no overlap. Calculate the area of the label. Answer(b)(ii) … cm2 [3] __________________________________________________________________________________________ Question 9 is printed on the next page.

16 0581/33/O/N/14 © UCLES 2014 Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included the publisher will be pleased to make amends at the earliest possible opportunity. Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. 9 A C B 7 6 5 4 3 2 1 –1 –2 –3 –4 –5 –6 –7 –6 –7 –5 –4 –3 –2 –1 1 0 2 3 4 5 6 7 y x (a) On the grid, (i) draw the line x = 1, [1] (ii) refl ect fl ag A in the line x = 1, [1] (iii) rotate fl ag A through 90° anticlockwise about the origin. [2] (b) Describe fully the single transformation that maps (i) fl ag A onto fl ag B, Answer(b)(i) … … [2] (ii) fl ag A onto fl ag C. Answer(b)(ii) … … [3]

® IGCSE is the registered trademark of Cambridge International Examinations. CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge International General Certificate of Secondary Education MARK SCHEME for the October/November 2014 series 0581 MATHEMATICS 0581/33 Paper 3 (Core), maximum raw mark 104 This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. It shows the basis on which Examiners were instructed to award marks. It does not indicate the details of the discussions that took place at an Examiners’ meeting before marking began, which would have considered the acceptability of alternative answers. Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for Teachers. Cambridge will not enter into discussions about these mark schemes. Cambridge is publishing the mark schemes for the October/November 2014 series for most Cambridge IGCSE®, Cambridge International A and AS Level components and some Cambridge O Level components. PAPA CAMBRIDGE

Page 2 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2014 0581 33 © Cambridge International Examinations 2014 Abbreviations cao correct answer only dep dependent FT follow through after error isw ignore subsequent working oe or equivalent SC Special Case nfww not from wrong working soi seen or implied Qu. Answers Mark Part Marks 1 (a) (i) 4, 5, 3, 6, 2 2 B1 for 3 correct or for fully correct tally or for 4 5 6 3 2 in tally column (ii) Correct bar chart 3FT B1 for linear vertical scale to at least 6 B2 for all bars correct height and equal width bars Or B1 for unequal widths or at least four bars correct height and equal width (b) 24 14 oe or 0.583[3...] or 58.3[3...]% 1 (c) No, 6 of each but different nos of boys and girls questioned oe 1 (d) (i) 2 2 M1 for 12th/13th value used (ii) 2.28 3 M1 for [0 × 4] + 1 × 6 + 2 × 5 + 3 × 3 + 4 × 5 + [5 × 0] + 6 × 2 M1 dep for their 57 ÷ 25 2 (a) 249.75 cao 1 (b) 1080 × 0.8 [= 864] 1 Or 1080 – 1080 × 0.2 (c) (i) 230.4[0] 2 M1 for 864 ÷ (9 + 4 + 2) (ii) 5 3 cao 2 B1 for 15 9 oe (d) (i) 488.75 2 M1 for 425 (1 + 0.15) oe (ii) 19.15 2FT M1 for their (d)(i) × 0.52 [= 254.15] (e) (i) 12.5 1 (ii) 172.93 3 M2 for 1225 × 1.0453 [= 1397.93] Or M1 for 1225 × 1.045 × 1.045 seen

Page 3 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2014 0581 33 © Cambridge International Examinations 2014 3 (a) 10 1 (b) Before, steeper gradient oe 1 (c) 11 20 1 (d) (i) 1 hour 48 minutes 2 M1 for 10 18 [× 60] oe (ii) Correct ruled lines drawn 2 B1 line from (11 20, 18) to (12 10, 18) B1FT for line (their 12 10, 18) to (13 58, 0) (e) (i) 10 57 1 (ii) 24 1 (f) Bearing 110° Length 3.25 cm 1 1 4 (a) (i) 85 1 (ii) 10 1FT FT 95 – their (i) (iii) 320 1FT FT 330 – their (ii) (iv) 95 1 (v) 95 1FT FT their (iv) (vi) 55 1FT FT 150 – their (iv) (vii) BCE and GCF or BCD and GCH or CED and CFH 1 (b) (i) 30° 2 M1 for 360 ÷ 12 (ii) 150° 1FT FT 180 – their (i)

Page 4 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2014 0581 33 © Cambridge International Examinations 2014 5 (a) (i) –2 2 M1 for change in y / change in x for two correct points (ii) –2x + 3 1FT FT their gradient (b) (i) 6, 7, 6, –9 3 B2 for 3 correct Or B1 for 2 correct (ii) 8 points correctly plotted Correct smooth curve 3FT 1 B2FT for 6 or 7 points correctly plotted B1FT for 4 or 5 points correctly plotted (iii) –3.8 to –3.5 and 1.5 to 1.8 2FT B1FT for one correct (c) (1.6 to 1,9, –0.7 to –0.2) and (–1.9 to –1.6, 6.2 to 6.7) 2FT FT intersection of line with their curve B1 for one correct 6 (a) 2x – 3 1 (b) 5x – 4 2 M1FT for 2x – 3 + x + 2 + their (2x – 3) oe (c) (i) 4x + 4 2 M1 for 2 × [3(x – 4) + 14 – x] oe (ii) 8 2FT FT correct solution of their equation M1FT for their (5x – 4) = their (4x + 4) (d) 12, 6 2FT B1FT for each (e) 72 1FT FT their length × width 7 (a) 10 12 20 14 18 34 5 B4 for 5 correct B3 for 4 correct B2 for 3 correct B1 for 2 correct (b) (i) 2n + 4 oe final answer 2 B1 for 2n + k or jn + 4 j ≠ 0 (ii) 4n + 2 oe final answer 2 B1 for 4n + k or jn + 2 j ≠ 0 (c) B [by] 15 [tables] 3 M1FT for their (2n + 4) = 66 or their (4n + 2) = 66 and A1FT for n = 31 or n = 16

Page 5 Mark Scheme Syllabus Paper Cambridge IGCSE – October/November 2014 0581 33 © Cambridge International Examinations 2014 8 (a) (i) [Triangular] prism 1 (ii) Correct net 3 B1 for 3 rectangles and two triangles, one on each side, even if incorrect sizes B1 for three correct ruled rectangles B1 for two correct ruled equilateral triangles (iii) 109.86 cao 1 (iv) 115 cao 1 (b) (i) 70.7 or 70.68 to 70.695 3 M2 for π × 1.52 × 10 Or B1 for 1.5 seen Or SC2 for answer 283 or 282.74 to 282.78 (ii) 37.7 or 37.69 to 37.704 3 M2 for π × 3 × 4 Or M1 for π × 3 9 (a) (i) Line x = 1 drawn 1 (ii) Correct reflection 1FT FT reflection in their drawn line (iii) Correct rotation 2 B1 for clockwise rotation 90° about origin or correct orientation incorrect position (b) (i) Translation       − − 4 3 B1 B1 Accept 3 left 4 down (ii) Enlargement [scale factor] 2 [centre] (6, 0) B1 B1 B1