Question

Using the exchange rate £1 = $1.31, calculate how many £ are in $12.15. Give your answer rounded to 2 dp

Answer 1

10 euros

Explanation:

1 euro=$1.31 so you take 1.31 and multiply by 9 to get 11.79 which is too low even after rounding, but if you multiply by 10 you will get 13.1, you will have too much even after rounding down but you would get change

Answer 2

12.15/1.31 = 9.27 (2 d.p.)