Time and Work
Since 12 workers make 500 boxes in 3 hours, each worker is making 1/12 of 500 boxes in 3 hours or 1/36 of 500 boxes per hour. Thus 16 workers should make 16/36 of 500 or 2000/9 boxes per hour. So it will take 300 divided by 2000/9 hours to make 300 boxes. 300 divided by 2000/9 is 300(9/2000) = 2700/2000 = 27/20. Since 27/20 hours is (27/20) x 60 = 81 minutes, the correct answer is 81.
Related MCQ Time and Work
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