SOLUTION: if person A cleans a pool in 60 minutes and B can do it in 30 minutes how long will it take when they work together
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Question 809719: if person A cleans a pool in 60 minutes and B can do it in 30 minutes how long will it take when they work together Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! x/1+x/.5=1
x+2x=1
3x=1
x=1/3= 20 minutes
or
x/60+x/30=1
x/60+2x/60=1
3x/60=1
3x=60
x=20 minutes
