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 ?

Find the single discount (as percent) equivalent to successive discounts of :

(i) 80% and 80%

(ii) 60% and 60%

(iii) 60% and 80%

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

The selling price of an article is ₹ 440 inclusive of tax at the rate of 10%, the marked price of the article is :

1. ₹ 484

2. ₹ 400

3. ₹ 450

4. ₹ 430