Dhruvika invested money for a period from May 2006 to April 2008 at rate of 12% per annum. If interest received by her is Rs 1620, find the money invested.

A man travelled 60 km by car and 240 km by train. Find what per cent of total journey did he travel by car and what per cent by train?

By selling a chair for Rs 1440, a shopkeeper loses 10%. At what price did he buy it?

A person wanted to sell a scooter at a loss of 25%. But at the last moment he changed his mind and sold the scooter at a loss of 20%. If the difference in the two SP’s is Rs 4000, then find the CP of the scooter.

The population of a village is 8000. Out of these, 80% are literate and of these literate people, 40% are women. Find the ratio of the number of literate women to the total population.