If the height of a cylinder is increased by 15% and the radius of its base is decreased by 10%, then by what percent will its curved surface area change?

It was compulsory to get 36% marks in a paper to Rakesh to pass it. He got only 24 % marks and failed by 9 marks. Total marks of paper was-

A man had a certain amount with him. He spent 20% of that to buy an article and 5% of the remaining on transport. Then he gifted ₹ 120. If he is left with ₹ 1,400, the amount he spent on transport is: 

If 8% of x is the t same as 4 % of y, then 20% of x is the same as:

A student scored 32 percent and failed by 6 marks. If he had scored 36 percent marks, he would have passed by 2 marks. What is the passing mark?

A man's annual income has increased by Rs. 5 lakhs but the tax on income that he has to pay has reduced from 12 % to 10 %. He now pays Rs. 10,000 more income tax. What is his increased income (in Rs. lakhs)? 

If C.P of 20 tables is equal to the S.P of 25 tables. Find the loss percentage.

If the population of a town is 64000 and its annual increase is 10%, then its population at the end of 3 yeas will be :