Mark Scheme (Results) January 2022 Pearson Edexcel International GCSE Mathematics A (4MA1) Paper 2HR. Graded A+

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International GCSE Maths Apart from Questions 3b, 13, 17 and 18 (where the mark scheme states otherwise), the correct answer, unless clearly obtained by an incorrect method, should be taken to imply... a correct method. Q Working Answer Mark Notes 1 (a) 1 – (0.24 + 0.16 + 0.38) oe 2 M1 0.22 A1 oe (b) 0.24 + 0.16 (= 0.4) oe 2 M1 0.4 A1 oe Total 4 marks https://britishstudentroom-b430a.web.app/2 (a) 720 ÷ 12 (= 60) or 78 × 12 (= 936) 4 M1 78 – ‘60’ (= 18) or ‘936’ – 720 (= 216) ' x' 720 = 936 or 720(1+ P ) = '936' 100 or (' x ' =) '936' (=1.3) oe 720 M1 '18' 100 or '216' 100 60 720 '1.3'100−100 oe or (1.3−1)100 M1 complete method to find P 30 A1 ignore extra % sign if given by candidate. (b) 0.18 × 1600 (= 288) oe 3 M1 if 1600 × 18% M2 for 1.5 × or 0.82 × 1600 + 800 (= 2112) seen, must have further 12.5 (= 18.75) processing of the 18% or or the value (288) 18 ÷ 1.5 (= 12) given. 0.125 × (1600 + 800) (= 300) oe M1 or (1600 + 800) × 0.875 (= 2100) Coupon B A1 for Coupon B and and correct 288 and 300 or figures seen 18.75(%) and 18(%) or 12(%) and 12.5(%) or 2112 and 2100 Total 7 marks https://britishstudentroom-b430a.web.app/3 (a) 4y  12 − 5 2 M1 Allow y = 7 oe or y − 7 or y < 7 4 4 4 y  7 4 A1 oe (b) 12x – 10 or 2(6x − 5) = 4x − 7 or 6x − 5 = 4 x − 7 oe 2 2 3 M1 for removal of fraction and multiplying out LHS or rearranging to remove the fraction or separating fraction (RHS) in an equation 12x − 4x = −7 + 10 oe or 6x − 4 x = − 7 + 5 oe 2 2 M1 ft (dep on 4 terms) for terms in x on one side of equation and number terms on the other 3 8 A1 (dep M1) oe Total 5 marks https://britishstudentroom-b430a.web.app/4 360 ÷ 8 (= 45) or 360 ÷ 5 (= 72) or 180 – (360 ÷ 8) (= 135) oe or 180 – (360 ÷ 5) (= 108) oe 4 M1 finding interior or exterior angle of octagon or pentagon Angles may be seen on diagram – but must be obtuse if interior and acute if exterior. ‘72’ – ‘45’ (= 27) or ‘135’ – ‘108’ (= 27) M1 (dep 1st M1) using a pair of interior or pair of exterior angles to find angle IBC Angle may be seen on diagram. 180 − '27' (= 76.5) 2 [Show More]

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