A boy scored 125 marks and 140 marks in the first test and the second test respectively. If the maximum mark in each test is 150, then the percentage increase in his performance is ___________.

The salary of a person is increased by 20%. By what % the new salary must be reduced to restore the original salary?

In a school, if there are 36% boys and 352 girls, then the number of boys is ________.

The average marks obtained in a class of 50 students is 70%. The average of first 25 is 60% and that of 24 is 80%. What is the marks obtained by the last student?

A man spend 15% of his income. If his expenditure is Rs.75, his income (in rupees) is:

If 35% of A’s income is equal to 25% of B’s income, then the ratio of A’s income to B’s income is

A basket contains 300 mangoes. 75 Mangoes were distributed among some student. Find the percentage of mangoes left in the basket.

If the present population of a village is 55,566, which was 35000 2 years ago, then find the rate of increase of population per year.