SOLUTION: One person can devote 24 hours a week to a project and two others can each devote 30 hours a week to the same project. If the total project requires 420 hours to complete, how many
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Question 61843: One person can devote 24 hours a week to a project and two others can each devote 30 hours a week to the same project. If the total project requires 420 hours to complete, how many weeks will it take? Answer by uma(370) (Show Source):
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Suppose man A devotes 24 hrs, man B and man C each devote 30 hrs a week.
THen the job of 420 hrs needs 5 weeks to be completed by A, B and C.
24 X 5 = 120 hrs
30 x 5 = 150 hrs
30 x 5 = 150 hrs
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