Profit And Loss

Amar sold a ratio for Rs.1100 with 10% profit and a television for Rs.11500 with 15% profit. His overall profit percentage is:

An article is sold for Rs. 16500 which was bought at Rs. 18750. Find the loss percent.

A merchant had 1000kg of grain, a part of which he sold at 10% profit and the rest at 18% profit. He gains 16% on the whole. The quantity sold at 18% profit is