Question Number: #Mat4590

If Steve 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 the 20 drinks?

A.) 2 minutes and 44 seconds
B.) 3 minutes and 26 seconds
C.) 3 minutes and 10 seconds
D.) 2 minutes and 58 seconds

Answer is option : A

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