Question

Faucet A can fill a water cooler in 8 minute. Faucet B can fill the ame water cooler in 12 minute. How long will it take both faucet together to fill the water cooler?

Answer 1

4.8 minutes

Explanation:

Rate A = 1 cooler / 8min rate B = 1/12

Now find time when both rates combined

1 cooler / ( 1/8 + 1/12) = 4.8 minutes