A man sells a radio set for ₹ 605 and gains 10%. At what price should he sell another radio of the same kind in order to gain 16% ?

By selling a sofa set for ₹ 2,500, the shopkeeper loses 20%. Find his loss percent or profit percent, if he sells the same sofa set for ₹ 3,150.

If C.P. of 20 identical articles is same as S.P. of 25 articles. The profit or the loss as percent is :

1. 25% loss

2. 25% profit

3. 20% loss

4. 20% profit

The marked price of an article is ₹ 500 and is sold for ₹ 400; the discount given is :

1. 10%

2. 20%

3. 25%

4. none of these