A man invites 4 men and 4 women to a party. In how many ways can they sit around a round table so that no two men are together?

The salaries of Haider, Ijaz, and Qasim are in the ratio 2 : 3: 5. If the increments of 25percent, 15percent, and 20percent are allowed respectively in their salaries, then what will be the new ratio of their salaries?

In a mixture of 60 liters, the ratio of milk and water is 2: 1. If this ratio is to be 1: 2, then the quantity of water to be further added is

What will be the ratio of the two numbers is when the two numbers are respectively 10percent and 20percent more than a third number.