An airplain flies 1,120 kilometers with a tail wind and returns, flying into the same wind. The total flying time is[..]

The diagonal of a square is 4 centimeters, longer than a side. How long is a side?

A box with no top is to be formed by taking a rectangular piece of metal 16 by 20 cm and cutting a square of the[..]

A rectangular lot has an area of 1,875 square meters. If the length of the lot is 50 meters greater than the width,[..]

A box with an open top is to be formed from a rectangular sheet of cardboard by cutting 2 cm squares from the[..]

Two buses start out from the same terminal and travel in opposite directionat the rates of 80 kph and 70 kph,[..]

A reservoir can be filled by one pipe in 6 hours and by another pipe in 8 hours. It can be emptied by a third pipe[..]

One pipe can fill a tank in 30 minutes, but a second pipe can fill it in 25 minutes. How long will it take if both[..]

working together, a man and a woman can do the job in 8 hours. If either had to do it alone it would take a woman 2[..]

it takes 4 hours for a man to do the job and 6 hours for a woman to do it. How long will it take for the two of them[..]