Mathematics · Oct / Nov 2023 · Paper 41 · Question 2

1960 [2]

M1 for 1 2 × 9.8 × 202 oe

1.5 or 1½ or 3 2 [3]

M1 for a first correct step, e.g. 20y – 15 = 15 4y – 3 = 3 or M1FTdep for a second correct step, e.g. 20y = 30 or 4y = 6 or y – 15 20 = 15 20 oe

9x – 10 final answer [2]

B1 for kx – 10 or 9x + c

or M1 for 15x – 24 or –6x + 14

or B1 for correct answer seen and then spoiled

2 − 3 2 b A oe final answer 3 [3]

M1 for isolating 3c3, 3c3 = 2b2 – A oe or for 2 2 A 2 b A 2 b = − 3 = + 3 c or c − − 3 3 3 3 M1FT for isolating c3, follow through their first step dep on a 3-term expression with a kc3 term M1FT taking the cube root to the final answer, follow through their previous step Maximum of two marks if answer incorrect

(2q – 1)(3p – 2) or (1 – 2q)(2 – 3p) final answer [2]

M1 for 2q(3p – 2) – [1](3p – 2) or 3p(2q – 1) – 2(2q – 1) or for correct answer seen then spoiled