A trader wishes to gain 20% after allowing 10% discount

Home » Aptitude » Discount » Question

A trader wishes to gain 20% after allowing 10% discount on the marked price to his customers. At what per cent higher than the cost price must he marks his goods ?

1. 30%
2. 33 1 %
  3
3. 34 2 %
  3
4. 35%

Correct Option: B

Let the CP be ₹ 100. Then SP on 20% gain = ₹ 120
Let the marked price be y.
Then, ( 100 - 10 )% of y = ₹ 120
⇒ 90% of y = ₹ 120

⇒ y =	120 × 100	=	400
	90		3

y = 133	1
	3

It is 33	1	% higher than the CP.
	3