3 men and 4 boys do a piece of work in 8 days, while 4 men and 4 boys finish it in 6 days. 3 men and 6 boys will finish it in :
Explanation:
Let m and b be 1 day’s work of a man and a boy respectively.
∴ 3m + 4b = 1/8 …(1)
also, 4m + 4b = 1/6 …(2)
Solving (1) and (2)
⇒ m = 1/24 and b = 0
Hence, 1 day’s work of 3 men and 6 boys = 3 × 1/24 + 6 × 0 = 1/8
∴ They will complete the work in 8 days.
Hence, option (a).
» Your doubt will be displayed only after approval.
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.