Out of 7500 candidates 75% were offered to study in Arts and 45% in Business. How many were offered both ?

The price of a certain DVD is discounted by 10% and the reduced price is then discounted by another 10%. This...

A zookeeper counted the heads of animal and found it to be 80. When he counted the legs of animals, he found t...

The speed of a boat is 10km per hour(kph) and the speed of the river current is 5 kph. The boat traveled 5 hou...

How many 1-inch square tiles would it take cover the floor of a closet that has dimensions 5 feet by 4 feet ?

2^30+2^30+2^30+2^30= ?

What must be added to 1/x for making it equal to x ?