A trader mixes 26 kg of rice at Rs. 20 per kg with 30 kg of rice of other variety at Rs. 36 per kg and sells the mixture at Rs. 30 per kg. His profit percent is:

A retailer buys a radio for Rs. 225. His overhead expenses are Rs. 15. He sells the radio for Rs. 300. The profit percent of the retailer is

A trader increases marked price by 40% and sells after 20% discount. Profit percentage?

A man sells 320 mangoes at the cost price of 400 mangoes. His gain percentage is :

A shopkeeper sells one transistor for Rs. 840 at a gain of 20% and another for Rs. 960 at a loss of 4%. His total gain or loss percent is:

A man gains 20% by selling an article for a certain price. If he sells it at double the price, the percentage of profit will be