Rekha bought a scooter for Rs 20,000 and sold it for Rs 22,000. What is the profit percentage?

Rs. 260200 is divided between Ram and Shyam so that the amount that Ram receives in 4 years is the same as that Shyam receives in 6 years. If the interest is compounded annually at the rate of 4% per annum then Ram's share is –

A man can row with the stream at 9 km/hr. and against the stream at 3 km/hr. His speed in still water is -

A water reservoir has two inlets and one outlet. Through the inlet it can be filled in 3 hours and 3 hours 45 minutes respectively. It can be emptied completely in 1 hour by the outlet. If the two inlets are opened at 01 : 00 pm and 02 : 00 pm respectively and the outlet at 03 : 00 pm then it will be emptied at : 

The simple interest on Rs. 12000 at a certain rate of interest in five years is Rs. 7200. Find the compound interest on the same amount for five years at the same rate of interest.