Question

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

Answer 1

Answer:

£170

Step-by-step explanation:

Lets say the CP (Cost Price) was x.

So therefore according to the problem,

$x - 20percent (x) = 136\\or x - \frac{20x}{100} = 136\\or \frac{80x}{100} = 136\\or x = 136 *\frac{100}{80} \\or x = 170$

Therefore the price of the computer before decrease was £170