£1200 is 80% of the original price.We need to find what 100% of the original price is.if £1200 is 80% then to find 1% we can divide it by 80.
1200/80=15
£15 is 1% of the original price to find 100% we can multiply this by 100
15 x 100= £1500100% is £1500 and therefore that is your original price