Mathematics · May / June 2025 · Paper 42 · Question 17

446 [3]

B2 for answer 46 × × 400 2.3 5 +

or M2 for 400 oe 100 [ ] × × 400 2.3 5

or M1 for oe 100

20 nfww [3]

M2 for x + 1.1x + 1.12x = [100 –] 33.80 oe 2 10 []

or M1 for 1 100 + x oe seen or for one correctly evaluated trial

742.97 to 742.99 [4]

B3 for 1.02[0…] or interest rate = 2[.0…][%] OR 20 17 700.13 ×

M3 for 500 oe 500 3 17 700.13 700.13× or for oe 500

or M2 for 17 700.13 oe 500 OR

M1 for 500(…)17 = 700.13 oe M1 dep on previous

M1 for 20 3 their r their r × + × + 500 1 or 700.13 1 100 100