A tradesman gives 4% discount on the marked price and 1

A tradesman gives 4% discount on the marked price and 1 article free with every 15 articles bought and still gains 35%. The marked price is more than the cost price by —

According to question, Discount on articles

1	× 100 = 6.25%
16

Overall discount = − 4 − 6.25 +	4 × 6.25	= −10%
	100

Let cost price = ₹ 100, then
selling price = ₹ 135
So, 90% of marked price = 135

Marked price =	135 × 100	= ₹ 150
	90

Marked price is increased by

=	150 − 100	× 100 = 50%
	90