N workmen could have build a dam in 50 days. 80 of them did not turn up. find N, if the work took 70 days for completion. (A) 340 (B) 320 (C) 350 (D)280

Question

Yash Baheti · Answer

Hi,

Let talk about men days.
We are spending N man days per day and it will take 50 days to complete.
But now we have only N-80 man days of work per day so :
50N = (N-80)X
X= 280 days.

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Ashwin · Answer

can you please explain a bit more

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N workmen could have build a dam in 50 days. 80 of them did not turn up. find N, if the work took 70 days for completion. (A) 340 (B) 320 (C) 350 (D)280

N workmen could have build a dam in 50 days. 80 of them did not turn up. find N, if the work took 70 days for completion.
(A) 340 (B) 320 (C) 350 (D)280

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N workmen could have build a dam in 50 days. 80 of them did not turn up. find N, if the work took 70 days for completion. (A) 340 (B) 320 (C) 350 (D)280

N workmen could have build a dam in 50 days. 80 of them did not turn up. find N, if the work took 70 days for completion.(A) 340 (B) 320 (C) 350 (D)280

2 Answers

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N workmen could have build a dam in 50 days. 80 of them did not turn up. find N, if the work took 70 days for completion.
(A) 340 (B) 320 (C) 350 (D)280