SOLUTION: If Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes, and Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working together t
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-> SOLUTION: If Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes, and Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working together t
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Question 353948: If Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes, and Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working together to mix 20 drinks? Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! 1/5+1/10+1/15=1/x
(6+3+2)/30=1/x
11/30=1/x
11x=30
x=30/11
x=2.73 min. for the three to mix 20 drinks working together.
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