SOLUTION: Mark takes 2 hours to clean 500 bottles,Flor takes 3 hours to clean 450 bottles.Working together,how long should it take them to clean 1,500 bottles?
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Question 1040732: Mark takes 2 hours to clean 500 bottles,Flor takes 3 hours to clean 450 bottles.Working together,how long should it take them to clean 1,500 bottles? Answer by robertb(5830) (Show Source):
You can put this solution on YOUR website! Mark's rate is 500/2 = 250 bottles per hour.
Flor's rate is 450/3 = 150 bottles per hour.
Let x = number of hours it would take them to clean working together.
==> (250+150)x = 1500
==> 400x = 1500 ==> x = 3.75 hours, or 3 hours and 45 minutes.
