Question

The price of a computer was decreased by 20% to £136. what was the price before it was decreased

Answer 1

7

Explanation:

Answer 2

170

Explanation:

Let x be the original price

x* .20 is the decrease

x - .20x = new price

.80x = new price

.8x = 136

Divide each side by .8

.8x/.8 = 136/.8

x =170