Foundation November 2023 Paper 1 Q17
17 Ali has £80
He gives \(\dfrac{9}{10}\) of his money to Joe.
Joe spends \(\dfrac{2}{3}\) of this money.
He gives the rest back to Ali.
What fraction of the £80 does Ali have now?
Give your answer in its simplest form. [4 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(80 \times \dfrac{1}{10}\ (\times 9)\) or 8 or 72 | M1 | oe |
| their \(72 \times \dfrac{1}{3}\ (\times 2)\) or 24 or 48 | M1dep | oe |
| \(80 -\) their 48 or their \(24 +\) their 8 or 32 or \(\dfrac{32}{80}\) | M1dep | oe dep on M2 |
| \(\dfrac{2}{5}\) | A1 | SC3 \(\dfrac{3}{10}\) |
Additional guidance
SC3 is for omitting the initial \(\dfrac{1}{10}\)