Foundation November 2020 Paper 2R Q21
21 Alison buys 2 boxes of strawberries, box A and box B.
Box A contains 15 strawberries.
The strawberries in box A have a mean weight of 24 grams.
Box B contains 25 strawberries.
The strawberries in box B have a mean weight of 18 grams.
Alison puts all 40 strawberries into a bowl.
Work out the mean weight of the 40 strawberries.
(3)
| Scheme | Marks |
|---|---|
| 15 × 24 (= 360) or 25 × 18 (= 450) | M1 |
| \(\dfrac{\text{‘}360\text{’} + \text{‘}450\text{’}}{40}\) \(\left(= \dfrac{810}{40}\right)\) | M1 |
| 20.25 oe | A1 |
| (3) | |
| (3 marks) |
Notes
M1: may be implied by 810 seen
M1: dep on M1
A1: for 20.25
accept 20.3 (allow 20 from correct working)