Bananas are bought at 3 for Rs.2 and sold at 2 for Rs. 3. The gain per cent is

On selling an article for Rs.48, a shopkeeper loses 20%. In order to gain 20%, what would be the selling price?

On selling an article at a certain price a man gains 10%. On selling the same article at double the price, gain per cent is

If the selling price of 10 pens is the same as the cost price of 12 pens then gain per cent is

On selling 100 pencils a man gains the selling price of 20 pencils. His gain per cent is