Two numbers are such that their difference, their sum and their product is in the ratio of 1: 7: 24. The product of numbers is

A family has two grandparents, two parents and four children. Two years ago, the average age of grandparents was 72 years. A year ago, the average age of parents was 36 years. Currently, the average age of children is 12 years. What is the current average age of the family?

A cylindrical container is filled with ice cream. Its diameter is 12 cm. and height is 15 cm. The whole ice cream is distributed among 10 children in equal cones having hemispherical tops. If the height of the conical portion is twice the diameter of its base, the diameter of the ice - cream cone is – 

If a discount of 10% is allowed on the marked price of an article, a shopkeeper gets a profit of 25 %. If he offers a discount of 25% on the marked price of the same article, then his percentage profit/loss will be:

Express 35% as a simple fraction:

If the right prism having trapezium base, whose parallel side are 13cm and 15cm respectively and the distance between them is 12cm. If the volume of the prism is 2150.4cm^z, then find the height of the prism.

The average of 5 numbers is 27. If one number is excluded, the average becomes 25. The excluded number is: 

What should come in place of the question mark '?' in the following number series?

17, 52, 158, 477, ? , 4310