25% of the cost price of an article is ₹ 600. Find its selling price when it is sold at a profit of 25%.

A man sold a bicycle at 5% profit. If the cost had been 30% less and the selling price ₹ 63 less, he would have made a profit of 30%. What was the cost price of the bicycle?

The cost price of an article is 25% below the marked price. If the article is available at 15% discount and its cost price is ₹ 2,400, find:

(i) its marked price

(ii) its selling price

(iii) the profit percent.

Find a single discount (as percent) equivalent to following successive discounts:

(i) 20% and 12%

(ii) 10%, 20% and 20%

(iii) 20%, 10% and 5%