The selling price of an article is 8/7 of cost price. What is the profit percentage?

If the cost price of 15 books is equal to the selling price of 20 books, the loss percent is

If by selling 110 mangoes, the C.P. of 120 mangoes is realised, the gain percent is

A vendor loses the selling price of 4 mangoes on selling 36 mangoes. His loss percent is 

By selling an article for Rs 100, a man gains Rs 15. Then, his gain % is

By selling 12 toffees for a rupee, a man loses 20%. How many for a rupee should he sell to get a gain of 20%?

Subroto sold an article for Rs 528 after allowing a discount of 12% on its marked price. What was the marked price of the article?

Sanjay made a profit of 8% by selling a shirt after offering a discount of 12%. If the marked price of the shirt is Rs 1080, find its cost price.

At what profit percent must an article be sold so that by selling at half that price, there may be a loss of 30%?

A fair price shopkeeper takes 10% profit on his goods. He lost 20% goods during theft. His loss percent is