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myininaya (myininaya):
Annie can make 20 drinks in 10 minutes Becky can make 20 drinks in 15 minutes Cathy can make 20 drinks in 5 minutes. If they work together, in how much time can they make the 20 drinks?
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myininaya (myininaya):
go daniel!
OpenStudy (anonymous):
Annie = 2 drink/1 min Becky = 1.33 drink/min Cathy = 4 drink/min Total = 7.33 drink/min 20drinks/7.33drinks/min = 2.73 minutes
OpenStudy (anonymous):
Thanks myininaya :D
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