The cost price of an article is ₹ 2,400 and it is marked at 25% above the cost price. Find the profit and the profit percent, if the article is sold at 15% discount.

Thirty articles are bought at ₹ 450 each. If one-third of these articles are sold at 6% loss; at what price must each of the remaining articles be sold in order to make a profit of 10% on the whole ?

Rohit buys an article marked at ₹ 600 and pays tax = 10%. The total amount paid by him is :

1. ₹ 540

2. ₹ 660

3. ₹ 590

4. ₹ 610

The selling price of an article is ₹ 1,000 and the tax on it is 10%. The increase of its tax if it increases to 15% is :

1. ₹ 500

2. ₹ 250

3. ₹ 50

4. ₹ 1,500