The average of the first natural numbers is:

The cost price of 6 oranges equals selling price of five. The profit or loss percent in the transaction is:

A and B are in the ratio of 5 : 4 and B and C are in the ratio of 3 : 2. What is the ratio of A : C?

If the area of a triangle with base x is equal to the area of a square with side x, then the altitude of the t...

When a 2-digit number is divided by the sum of its digits, the quotient is 4. If the digits are reversed, the...

If 5 men can do a piece of work in 6 days and 10 women can do it in 5 days. In how many days can 3 men and 5 w...

If A's income is 25% more than B's income, then the percentage of B's income in terms of A's income is: