Question

Twelve men can complete a work in 8 days. Three days after they started the work, 3 more men
joined. In how many days will they together complete the remaining work?
(A) 2
(B) 4
(C) 5
(D) 6​

Answer 1

let the efficiency of each men be 1

total work 12×8= 96

work done in 3 days 12×3 = 36

left work = 60

now total men 12+3 =15 men

days taken by 15 men to complete the remaining work= 60/15= 4 days (ans)

Answer 2

Answer:

(c) 5

Step-by-step explanation:

I hope it would help you