35 persons are engaged to complete a work in 60 days. After 32 days it is observed that only (2/5)th part of the work has been done. The number of persons to be engaged to complete the remaining work in the said period is
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 25
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Understanding |
Application |
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35 persons are engaged to complete a work in 60 days. After 32 days, it is observed that only 2/5th of the work has been done. |
So, Remaining time = 60 – 32 = 28 days And Remaining work = 1 – 2/5 = 3/5th |
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We know: [M1 × D1]/W1 = [M2 × D2]/W2 |
So, [35 × 32]/(2/5) = [M2 × 28]/(3/5) M2 = (35 × 32 × 3)/(2 × 28) M2 = 60 |
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Hence, Number of more workers needed = 60 – 35 = 25 |