Question

The price of a computer was decreased by 30% to £147. What was the price before the decrease?

Answer 1

210

Explanation:

let original price =x

x×70÷100=147

x=147×100÷70=210

Answer 2

£210

Explanation:

A decrease of 30% represents 70% of the original cost.

100% represents the original cost

Divide the price by 70 to find 1% then multiply by 100 for original cost

original cost =
`(147)/(70)` × 100 = 2.1 × 100 = £210