1MA0 Foundation November 2016 Paper 1 Q12
12 The diagram shows a flag drawn on a grid of squares.
(a) Colin says that \(\frac{1}{4}\) of the flag is shaded.
Colin is right.
Explain why. (2)
Colin is right.
Explain why. (2)
(b) What percentage of the flag is not shaded? (1)
| Answer | Mark | Notes |
|---|---|---|
| Correct explanation | 2 | M1 for working out area of triangle (= 6) and area of rectangle (= 24) or for dividing rectangle into eighths or other comparable areas A1 for explaining that that \(24 \div 6\) is 4 or \(\frac{2}{8} = \frac{1}{4}\) or that \(\frac{1}{2} \times \frac{1}{2} = \frac{1}{4}\) from symmetry of shape |
| Answer | Mark | Notes |
|---|---|---|
| 75 | 1 | B1 cao |