Calculate the gain per cent, if a watch bought for ₹ 450 sold for ₹ 500.

By selling the bicycle for ₹ 1200, David gets 20% profit. Find the cost price of the bicycle.

A man bought a bicycle for ₹ 550 for how much should be sell bicycle so as to gain 10%?

Find the profit per cent, if CP = ₹ 500, SP = ₹ 550.

A man loses 10 % by selling an article for ₹ 270. Find the cost price of the article.

A man loses 10% by selling his watch for ₹ 450. Find the cost price of the watch.

A article is sold for ₹ 10 which is a 10% profit of CP, find the CP.

A person buys a book for ₹ 27 and sell it at a profit of 10% of SP. Find the SP.

An article is bought for ₹ 180 and sold at a gain of 20%. The selling price of the article is

If an article is sold at loss of 50%, find the cost price in terms of selling price.