If mean of 10%, 20%, 30% and 40% of a number is 24, what is that number?

The income of X is 20% more than that of Y, and the income of Y is 10% more than that of Z. If X's income is ₹ 26,400, find the income of Z.

If 40% of an amount is 250, what will be 60% of that amount?

30% of 80% of 36% of an amount is ₹ 216. What is the amount?

In the table given below, what is the percentage of students who secured more than 20 marks? Marks: 1-10 | 11-20 | 21-30 | 31-40 | 41-50 Number of Students: 30 | 40 | 70 | 30 | 30

A's weight is 25% of B's weight and 40% of C's weight. What percentage of C's weight is B's weight?