O-LevelMathematicsNumber4024/22 · Oct/Nov 2025 · Q53 Marks
Sofia invests $400 in a savings account. The account pays simple interest at a rate of 2.8% per year.
- (a)Calculate the total amount of interest Sofia receives at the end of 3 years.[2]
- (b)Luis invests $400 in a different savings account that also pays simple interest. The rate of interest for this account is 0.4% per year more than the rate for Sofia's account. Calculate how much more interest Luis receives each year than Sofia receives each year.[1]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2025). The mark or mark type is shown in brackets.
- [2] 33.6[0] cao. M1 for 400×2.8[x3]/100 oe If 0 scored, SC1 for answer 433.6[0]
- [1] 1.6[0] cao
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