There are 150 coins in a jar - OCR - GCSE Maths - Question 3 - 2021 - Paper 3

To find the number of 20p coins, calculate (\frac{3}{10}) of 150:

[ \text{Number of 20p coins} = \frac{3}{10} \times 150 = 45 ]

The total number of coins is 150:

[ \text{Number of 50p coins} = 150 - (30 + 45) = 75 ]

Now, calculate the total value of all coins:

• Value of 10p coins: [ \text{Value} = 30 \times 0.10 = £3.00 ]

• Value of 20p coins: [ \text{Value} = 45 \times 0.20 = £9.00 ]

• Value of 50p coins: [ \text{Value} = 75 \times 0.50 = £37.50 ]

Finally, sum these values: [ \text{Total value} = 3.00 + 9.00 + 37.50 = £49.50 ]