1MA0 Foundation November 2015 Paper 1 Q12
12 You can use this rule to work out the total hire charge, in pounds (£), for hiring a satellite phone.
Total hire charge = number of weeks \(\times\) 90 + 50
Ismail wants to hire a satellite phone for 4 weeks.
(a) Work out the total hire charge. (2)
Dominik hires a satellite phone.
His total hire charge is £860
(b) For how many weeks did he hire the phone? (3)
| Answer | Mark | Notes |
|---|---|---|
| 410 | 2 | M1 for \(4 \times 90 + 50\) (= 410) A1 cao |
| Answer | Mark | Notes |
|---|---|---|
| 9 | 3 | M1 for one inverse operation eg \(-50\) or \(\div 90\) M1 for complete inverse operations, eg \((860 - 50) \div 90\) accept \(860 - 50 \div 90\) A1 cao OR M1 ft for finding the difference to part (a), ie \(860 - \text{``}410\text{''}\) (= 450) M1 for \(\text{``}450\text{''} \div 90\) A1 cao |