A merchant marks his goods 40% above the cost price and

A merchant marks his goods 40% above the cost price and sells them at a discount of 15%. Find his gain %.

Let the C.P. of each article be ₹ 100.
∴ Marked price = ₹ 140

∴ S.P. =	140 × 85	= ₹ 119
	100

∴ Gain percent = 19%
2nd method to solve this question.
Here, r = 40%, r₁ = 15%

Gain % =	r ×(100 − r₁)	− r₁
	100

Gain % =	40 × (100 − 15)	− 15
	100

Gain % =	40 × 85	− 15
	100

Gain % =	3400	− 15
	100

Required Gain % = 19%