The average of two numbers is 62. If 2 is added to the smaller number, the ratio of the numbers becomes 1 : 2. What is the difference between numbers?

What should be added to each term of the ratio 2 : 5 so that it becomes equal to 5 : 6?

Three numbers are in the ratio 1 : 2 : 3 and the sum of their cubes is 4500. What is the smallest number?

The average monthly salary of all the employees in a company is ₹ 12,000. Among them the average salary of male employees is ₹15,000 and that of female employees is ₹8000. Accordingly, what is the ratio of male and female employees?

There is a loss of 5% by selling an article for Rs.665. In order to get 12% profit on that article, its selling price has to be kept?

Each side of a square is 6 cm. On which a pyramid has been built, its slant height is 4: 2 cm. Find the total surface of the pyramid?

What is the average of the first five prime numbers?

What is the average of all odd natural numbers less than 100?