Practice Paper 2 June 2015Higher TierEdexcel Style

Mark Scheme

Commissioned by The PiXL Club Ltd.

1

1a 300 2 M1 for 3x100A1 cao

1b 24 2 M1 for 2 divided by ½ x 6A1 cao

2a 775 2 M1 for 1.25 x620 oeA1 cao

2b 2 3 M1 for 50/1.25M1 for 42 –‘40’A1 cao

3 2.42927(0474) 2 B2 for 2.42927 or better

4 2, 5, 10 2 M1 for

A15 37.7 2 M1 for Π x 12

A1 37.6 to 37.86 Correct diagram 3

7 3

8 2.6 4

9 Correct construction 2

2

10 12.97 – 13.48 4

11a 5x – 2 2 M1 expanding bracketsA1

11b x2 + x -12 2 M1 for 3 of the 4 terms from expanding brackets correctA1

12a 1.55 x 104 1 B112b 0.00248 1 B112c 1.96 x 108 2 B2 both correct

B1 one of the two elements correct13a 9, -3, 3 2 B2 all three correct

B1 for one or two correct13b correct graph 2 B1 points correct

B1 joined with a correct straight line14a £4867.20 3

14b 5 2

15 x = 3y = -2

3 M1 for eliminating one variableM1 substituting in for second variableA1 both correct

16 4.16-2.27

3 M1 subsituting into formulaM1 for x = 17±√3349 / 18A1

17a 51.3 – 51.35 3 M1 for cos x = 5/8M1 for using inverse cosA1

17b 10.4 – 10.5 3 M1 for tan 40 = y/12.5M1 12.5 x tan 40A1

18 151 3 M1 understanding sale price = 88%M1 dividing by 0.88A1

19a 5 2 M1A1 cao

19b 26 or 27 2 M1A1 for 26 or 27

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20a 0.2, 0.4, 0.4 2 B1 for 0.2B1 for both 0.4s

20b 0.48 2 M1 for 0.8 x 0.6A1

21 104 2 M1 for valid methodA1

22a b - a 1 B122b Proof 3

23ay =

x50

3M2 for 10 =

500k oe

M1 for y = kx oeA1

23b 7 1 B124 x = -1 or

x = 45

25a 38.5 2 M1 for 0.5 x 10.5 x 8.3 x sin62A1 for 38.4 – 38.5

25b 9.86 3 M1 use of cosine ruleM1 for correct order of evaluationA1 for 9.86 -9.865

26a 3060

2 B1B1

26b fd = 1.5fd = 0.5

2 M1 one fd correctA1

27 1.08 as the LB and UB agree to that no of sig fig

5

4

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