A student got 30% marks in an examination and failed because he got 12 marks less. Another student got 40% marks in the same examination and got 18 marks more than the minimum passing marks. Must have marks to pass

Find the greatest perfect square number of 5 digits.

Radha spends 40% of her salary on food, 20% on house rent, 10% on entertainment and 10% on conveyance. If her savings at the end of a month are ₹ 1500, then her salary per month (in ₹) is  

Price of sugar rises by 20%. By how much percent should the consumption of sugar be reduced so that the expenditure does not change?

If A earns  more than B, how much percent does B earn less than A?

Two students appeared for an examination. One of them secured 9 marks more than the other and his marks were 56 % of the sum of their marks. The marks obtained by them are 

A person who spends of  his income is able to save 1200 per month. His monthly expenses (in) is:  

In a factory, the production of cycles rose to 48,400 from 40,000 in 2 years. The rate of growth per annum is?