Ruben put an empty cup underneath a leaking faucet. After 1 1/2 hours, Ruben collected 1/4 cup of water. What is the rate, in cups per hour, at which the water is leaking from the faucet?

The rate at which the water is leaking from the faucet is solved by dividing the amount of water collected by the number of hours.

r = 0.25 cup / 1.5 hours

r = 0.167 cup/hour

Thus, the rate at which the water is leaking from the faucet is approximately equal to 0.167 cup/h.