4MA0 Foundation January 2018 Paper 1R Q21
21 Ahmed bought one box of lemons.
The box of lemons cost $4
There were 24 lemons in the box.
Ahmed sold \(\dfrac{3}{4}\) of all the lemons he bought for 30 cents each.
He then sold the rest of the lemons for 20 cents each.
Calculate the percentage profit that Ahmed made.
Use $1 = 100 cents.
(4)
| Scheme | Marks |
|---|---|
| \(\dfrac{3}{4} \times 24\) (= 18) or \(\dfrac{1}{4} \times 24\) (= 6) | M1 |
| ‘18’ × 30 (= 540) or ‘6’ × 20 (= 120) | M1 |
| \(\dfrac{\text{'}540\text{'} + \text{'}120\text{'} - 400}{400} \times 100\) (= 65) oe | M1 |
| 65% | A1 |
| (4) |
Notes
M1: for a complete method
SC: B3 for an answer of 165%