A shopkeeper marks his sarees at 20% above the cost price

A shopkeeper marks his sarees at 20% above the cost price and allows the purchaser a discount of 10% for cash buying. What profit percent does he make?

As we know that ,

Gain % = a − b −	a × b
	100

Gain % = 20 − 10 −	20 × 10
	100

2nd method to solve this question .
Here, r = 20%, r₁ = 10%

Profit or loss =	r × (100 − r₁)	− r₁
	100

Profit or loss =	20 × (100 − 10)	− 10
	100

Required Profit or loss = 18 – 10 = 8% profit.