A shopkeeper cheats to the extent of 10% while buying and selling fruits, by using tampered weights. His total gain , in percentage is:

The cost price of 20 articles is the same as the selling price of x articles. If there is 25% gain, then the value of x

A phone is sold for Rs. 860 at a loss of 20% for how much should it be sold gain 10%?

An article is sold at a gain of 16%. If it had been sold for Rs.400 more, 20% would have been gained. The cost price of the article is

Medha sells her bag for ₹ 300 and loses ₹ 60. At what price must she sell the article to gain 15%?

The difference between the selling prices of a keyboard at losses 15% and 25% is Rs. 50. Then the cost price of a keyboard is :

Radhe buys two TVs at the same cost price, one of them is sold at $$11 {1\over 9}\% $$ profit and the other at   $$14{2\over 7}\% $$ profit, then the difference between their selling price is Rs $${200\over 7}$$. Find the cost price of the TV.