A 12 gallon tub has a faucet that lets water in at a rate of 3 gallons per minute, and has a drain that lets water out at a rate of 1.5 gallons per minute. If you start with 3 gallons of water in the tub, how long will it take to fill the tub completely?

A man rowed 3 miles upstream in 90 minutes. If the river flowed with a current of 2 miles per hour, how long d...

Two trains are running on parallel lines in the same direction at a speed of 50 km/hr and 30 km/hr respectivel...

If 4y-3x=5, what is the smallest integer value of x for which y>100?

In a class, 50% of the male students and 2/3 of the female students speak French. If there are 3/4 as many gir...

A fuel tank is 50% full. If 8 gallons of fuel is removed, then the tank remains 10% full. What is the capacity...

What is the minimum number of tiles of size 16 by 24 required to from a square by placing the tiles adjacent t...