4MA0 Foundation June 2015 Paper 1R Q18
18 The mean height of a group of 6 children is 165 cm.
One child, whose height is 155 cm, leaves the group.
Find the mean height of the remaining 5 children.
(3)
| Scheme | Marks |
|---|---|
| 6 × 165 (= 990) | M1 |
| (“990” – 155) ÷ 5 | M1 |
| 167 | A1 |
| (3) | |
| Total 3 marks |
Notes
M1: dep condone missing brackets