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One item is filed under this topic.
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Mixing drinks |
2009-05-02 |
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From samantha:
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 3of them working together to mix the 20 drinks?
Answered by Stephen La Rocque and Claude Tardif. |
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