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.

The ratio of number of boys and girls in a school of 720 students is 7:5. How many more girls should be admitted to make the ratio 1 : 1?

The square root of a positive number less than 100 lies between

If the square root of 841 is 29, then square root of 0.00000841 is equal to:

The value of   $$2+\sqrt{0.09}-{^3\sqrt{0.008}}-75\% $$ of 2.80 is: