SOLUTION: Pipes A, B, and C individually drain a basin in 3, 2, and 1.5 hours respectively. If they were all opened to drain the basin together, how many minutes would it take? a) 20 b) 4

Algebra ->  Rate-of-work-word-problems -> SOLUTION: Pipes A, B, and C individually drain a basin in 3, 2, and 1.5 hours respectively. If they were all opened to drain the basin together, how many minutes would it take? a) 20 b) 4      Log On


   

Question 283085: Pipes A, B, and C individually drain a basin in 3, 2, and 1.5 hours respectively. If they were all opened to drain the basin together, how many minutes would it take?
a) 20 b) 40 c) 60 d) 90


Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
x/3+x/2+x/1.5=1
multiply by 6
2x+3x+4x=6
9x=6
x=6/9=2/3 hour
2/3*60=40 minutes
b)40