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    ehoaglin2

    A Movie Theater Runs Two Documentary Films Continuously. One Documentary Runs For 40 Minutes And A Second Documentary Runs For 60 Minutes. Both Movies Begin At 3:00 P.m. When Will The Movies Begin Again At The Same Time?

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    alishan

    This is an easy mathematical problem. The trick is to take a common multiple which is 120. When the 60 minutes documentary runs for two times , it takes 120 minutes where as the 40 minutes documentary runs for 3 times taking 120 minutes. Therefore the documentaries will begin together after 120 minutes i.e. 2 hours, so 2 hours from 3:00pm becomes, 5:00 pm.

    answered 1 year ago   

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