18 percent of the coal was destroyed in a coal mine. If only 492 tons of coal was received, then tell how much coal was destroyed?

The cost price of an article should be increased by what percentage so that after giving 20 percent discount on it, 44 percent profit is obtained?

Tonu invested 10 % more than the investment of Monu and Sonu invested 10 % less than the investment of Monu. If the total investment of all the three persons is ₹ 60, 000, the investment of Monu is – 

The price of an article is cut by 33 %, to restore its original value, the new price must be increased by 

The difference of two numbers is 20 % of the larger number. If the smaller number is 20, the larger number is:

If the population of a town is 64000 and its annual increase is 10%, then its population at the end of 3 yeas will be :

In a group of 20 singers and 40 dancers, 20% of the singers are less than 25 years old and 40% of the entire group are under 25 years. What percentage of dancers are under 25 years?

A team played 40 games in a season and won 24 of them. What percent of games played did the team win?