A. 13 ½

B. 25

C. 21 ½

D. 31 ½

E. None of these

By selling 66 metres of cloth a person gains the cost p of 22 metres. Find the gain per cent.

A man sold 18 cots for Rs. 16,800, gaining thereby the cost price of 3 cots. The cost price of cot is:

A man invests Rs. 4400 in stock at 110 and sells when the stock rises to 119. What is profit?

A book dealer allows 16 per cent discount to a retailer and the retailer allows 10 per cent discount to a customer. These both discounts are given on the printed price of the book. If the customer pays Rs 270 for a book and the dealer makes a profit of 5 per cent what is the cost price of the book for the dealer?

In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit