4MA0 Foundation June 2015 Paper 1 Q7
7 The cost of a litre of petrol in Hong Kong is 17.50 Hong Kong dollars ($).
Chen buys 25 litres of petrol in Hong Kong.
The only money he has to pay with are $50 notes.
(a) What is the smallest number of $50 notes he needs? (3)
He pays with the smallest number of $50 notes
(b) Work out how much change he should get. (2)
| Scheme | Marks |
|---|---|
| 25 × 17.5(0) (= 437.5(0)) or 437 or 438 | M1 |
| “437.5” ÷ 50 (= 8.75) or 50 × 9 or 50 × 8 | M1 |
| 9 | A1 |
| (3) |
Notes
M1: dep
| Scheme | Marks |
|---|---|
| “9” × 50 – “437.50” oe or 50 – (“437.5” – 400) oe | M1 |
| 12.50 | A1 |
| (2) | |
| Total 5 marks |
Notes
M1: for a complete method;
only ft from an integer answer to (a)
A1: ft providing answer is positive. Accept 12.5