Foundation November 2021 Paper 3 Q3
3 There are 150 coins in a jar.
20% of the coins are 10p coins.
\(\dfrac{3}{10}\) of the coins are 20p coins.
The rest of the coins are 50p coins.
Work out the total value, in £, of the 150 coins.
You must show your working. [6]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 49.50 with correct working | 6 | B5 for figs 495 as final answer with at least the M2 mark OR M1 for [10p =] \(0.2 \times 150\) oe soi 30 M1 for [20p =] \(0.3 \times 150\) oe soi 45 and M1 for (150 − their 30 − their 45) oe soi by 75 and M2 for (their \(30 \times 10\)) and (their \(45 \times 20\)) and (their \(75 \times 50\)) oe or M1 for one from (their \(30 \times 10\)) or (their \(45 \times 20\)) or (their \(75 \times 50\)) oe If 0 or 1 scored and no/insufficient working seen SC2 for figs 495 as final answer | Ignore money notation Ignore money notation May be \(150 \div 2\) May work in £ Implied by 300, 900, 3750 or £3, £9, £37.5[0] If M1 only and SC2 available award SC2 only |