Problem:
Cagney can frost a cupcake every seconds and Lacey can frost a cupcake every seconds. Working together, how many cupcakes can they frost in minutes?
Answer Choices:
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E.
Solution:
Because seconds is of a minute, Cagney can frost cupcakes in five minutes. Because seconds is of a minute, Lacey can frost cupcakes in five minutes. Altogether they can frost cupcakes in five minutes.
The problems on this page are the property of the MAA's American Mathematics Competitions