An empty swimming pool can be filled to capacity through an inlet pipe in 3 hours, and it can be completely drained by a drainpipe in 6 hours . If both pipes are fully open at the same time , in how many hours will the empty pool be filled to capacity?

At 10 a.m. two trains started travelling toward each other from stations 287 miles apart. They passed each oth...

If a rectangle's length and width are both doubled, by what percent is the rectangle's area increased?

A rectangular tank 10 inch by 8 inch by 4 inch is filled with water. If all of the water is to be transferred...

Razia spent 3 hours climbing 6 miles up a hill. She spent 2 hours coming down the hill in a different path whi...

The length of a rectangle is 1 inch more than 2 times its width.The area of the rectangle is 36 square inches....

A box contains 90 nuts each of 100 gms an d 100 bolts each of 150 gms. If the entire box weighs 35.5 kgs , the...