If the selling price of a TV set is equal to of its cost price, find the gain per cent.

Hint. Let CP be x. Then, SP =Rs.

Hema bought two pairs of jeans for Rs.1450 each. She sold one of them at a gain of 8% and the other at a loss of 4%. Find her gain or loss per cent in the whole transaction.

A grocer purchased 200 kg of rice at Rs.25 per kg. He sold 80 kg of it at a gain of 10% and 40 kg at a loss of 4%. At what rate per kg should he sell the remainder to gain 8% on his total investment?

If the selling price of a flower vase is of its cost price, find the loss per cent.

By selling a bouquet for Rs.322, a florist gains 15%. At what price should he sell it to gain 25%?