4MA0 Foundation January 2015 Paper 2R Q9
9 This rule can be used to work out the total cost in dollars ($) of hiring a car.
Total cost in dollars = 40 × number of days + 50
Alex hired a car for 6 days.
(a) Use the rule to work out the total cost. (2)
Suresh hired a car.
The total cost was $410
(b) Use the rule to work out the number of days he hired the car. (2)
| Scheme | Marks |
|---|---|
| 6 × 40 = 240 240 + 50 | M1 |
| 290 | A1 |
| (2) |
| Scheme | Marks |
|---|---|
| 410 - 50 = 360 360 ÷ 40 | M1 |
| 9 | A1 |
| (2) | |
| (4 marks) |
Notes
M1: or 6 + (410 - '290') ÷ 40