Question

A coat is on sale for Rs.120 after a discount of 20 percent. Find the original price.

Answer 1

do u know how to find 20% of 120 ??

Answer 2

Assume the original price to be \(x\). If you discount 20 percent of \(x\), you are essentially subtracting off \(0.20x\) from \(x\). So you can formulate this as:

\(x - 0.20x = 120 \\
0.80x = 120 \\
x = 120/0.80\\
x = 150\)

You can double check:
20% of 150 is (150 * 0.20 = 30)
And 150 - 30 = 120 :)