1MA0 Higher June 2013 Paper 1 Q6
6 Ed has 4 cards.
There is a number on each card.
| 12 | 6 | 15 | ? |
The mean of the 4 numbers on Ed’s cards is 10
Work out the number on the 4th card. (3)
| Answer | Mark | Notes |
|---|---|---|
| 7 | 3 | M1 for \(4 \times 10\) or 40 or \(\dfrac{12 + 6 + 15 + x}{4}\) or a correct equation M1 for a complete and correct method A1 cao |