By selling a flower pot for Rs.322, a man gains 15%. At what price should he sell it to gain 20%?

The marked price of an article is 10% more than the cost price and a discount of 10% is given on the marked price. The seller has

The price of watch including 10% VAT is Rs. 825. What is its basic price?

If the cost price of 12 pens is equal to the selling price of 16 pens, find the loss per cent.

A dealer gets Rs. 30 less if instead of selling a chair at a gain of 12% he sells it at a gain of 8%. Find the cost price of the chair.