SOLUTION: One pipe can fill a tank in 50 minutes and a second pipe can fill it in 90 minutes. When the tank was empty, the first pipe was opened for 20 minutes, then shut. How long will it t

Question 1025931: One pipe can fill a tank in 50 minutes and a second pipe can fill it in 90 minutes. When the tank was empty, the first pipe was opened for 20 minutes, then shut. How long will it take the second pipe to finish the job?
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!

RELATED QUESTIONS
One pipe can fill a tank in 8 minutes and a second pipe can fill it in 12 minutes. If the (answered by checkley71,Earlsdon)

Two pipes can be used to fill a water tank. If the first pipe is used alone it can fill... (answered by scott8148)

49. One pipe can fill a tank in 8 minutes and a second pipe in 12 minutes. If the tank is (answered by doctor_who)

One pipe can fill a tank in 8 minutes and a second can fill it in 12 minutes. If the tank (answered by ikleyn)

one pipe can fill a tank in 3 minutes and a second pipe can fill the same tank in 7... (answered by josmiceli)

One pipe can fill a tank in 24 minutes. A second pipe can fill it in 8 minutes and a... (answered by scott8148)

Two pipes can be used to fill a water tank. If used alone the first pipe could fill the... (answered by partha_ban)

Pipe A can fill a tank in 25 minutes. Pipe B can fill the same tank in 20 minutes. To... (answered by ankor@dixie-net.com)

One pipe can fill a tank in 45 minutes and another pipe can fill it in 30 minutes. if... (answered by ramkikk66)