4400 Higher June 2004 Paper 4 Q4
4 The mean height of a group of 4 girls is 158 cm.
(a) Work out the total height of the 4 girls. (1)
Sarah joins the group and the mean height of the 5 girls is 156 cm.
(b) Work out Sarah’s height. (3)
| Scheme | Marks |
|---|---|
| 632 | B1 |
| (1) |
Notes
B1: cao
| Scheme | Marks |
|---|---|
| 5 × 156 or 780 | M1 |
| "780" − "632" | M1 |
| 148 | A1 |
| (3) | |
| (4 marks) |
Notes
M1: (dep M1)
A1: cao