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

Question 61842: 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 brandonpark2889(31) (Show Source): You can put this solution on YOUR website!
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?
Okay. Since there are 3 people working on the same project, you first add them all: 30+30+24. This equals 84. Now, it said how many weeks, so 84x=420, as x = weeks. Divide 84 on each side: 420/84 is 5. it takes 5 weeks to complete the project.
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I like math, period.
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