In a shop, shirts are usually sold at 40% above the cost price. During a sale, the shopkeeper offers a discount of 10% off the usual selling price. If he manages to sell 72 shirts for Rs 13.608, then his cost price per shirt, in Rs, is	Choices:
A) 120 B) 130 C) 140 D) 150 E) 160
suppose cost price is x   so selling price is 14x/10   now after 10% discount selling price is 126x/100   total selling price is 72*126x/100   72*126x/100=13608   x=150   so the cost price per shirt is 150.   ANSWER:150
<result>D</result>
In a shop, shirts are usually sold at 40% above the cost price. During a sale, the shopkeeper offers a discount of 10% off the usual selling price. If he manages to sell 72 shirts for Rs 13.608, then his cost price per shirt, in Rs, is