Please submit your concern

Explanation:

Let the efficiency of each person be ‘e’ units/hour.

Given,
35% work is done by N men in 10 days working for 7 hours/day, while
65% work is done by N-10 men in 14 days working for 10 hours/day

N×10×70.35= (N-10)×14×100.65

N×77= (N-10)×1413

⇒ N = (N-10)×1413

⇒ 13N = 14N – 140

⇒ N = 140

Hence, option (b).

Feedback

Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.


© 2024 | All Rights Reserved | Apti4All