Question

12 men complete a work in 18 days. Six days after they had started working, 4 men joined them. How many days will all of them take to complete the remaining work?
(a) 10 days
(b) 12 days
(c) 15 days
(d) 9 days
Please answer step by step​

Answer 1

works will take 10 days .

Answer 2

Answer:

(d) 9 days

Total work = 12×18 =216 men days=216MD

1. Now,4 men joined after 6 days
2. So, what done in 6 days=12×6=72MD
3. Now, after 4 men join, work done per day will be 16MD
4. Remaining work = 144MD
5. So, Time taken=144/16=9days