A person bought two watches for Rs. 480. He sold one at a loss of 15% and the other at a profit of 19% and he found that each watch was sold at the same price. Find the cost price of the two watches.

By selling a table for Rs. 350 instead of Rs. 400, loss percent increases by 5%. The cost price of table is : 

Mohan, a shopkeeper, bought a shirt of list price ₹225 at a discount of 20%. If he wants a profit of 30% then he should sell the shirt for:

A man sells a table at 12 % loss and a book at 19% profit then he earns Rs. 160 as profit. But if he sells the table at 12 % profit and the book at 16% loss then he bears a loss of Rs. 40. Find the price of one book?