20 man can finish a work in 30 days. They started working, but 4 men left the work after 10 days. In how many days would the work be completed?

Solution (By Examveda Team)

Total work = 30 × 20 = 600
After 10 days = 20 × 10 = 200
Remaining work = 600 - 200 = 400
4 men left, remaining = 16 men
16 × D = 400
D = $$\frac{{400}}{{16}}$$
D = 25 days
Total days = 25 + 10 = 35 days