Mohit sold a T.V. for ₹ 3,600, gaining one-sixth of its selling price. Find :

(i) the gain.

(ii) the cost price of the T.V.

(iii) the gain percent.

By selling a certain number of goods for ₹ 5,500, a shopkeeper loses equal to one-tenth of their selling price. Find :

(i) the loss incurred

(ii) the cost price of the goods

(iii) the loss as percent.

The cost price of an article is 90% of its selling price. What is the profit or the loss as percent ?