12 men can complete 35% of the work in 10 days, working 9 hours daily. Find the number of days in which 10 men can do the remaining work, working 5 hours daily.

Correct Answer: 40.1 days
The total work done = 35% of the total work The work remaining = 65% of the total work The total work completed = 12 * 10 * 9 = 1080 units 1080 units is 35% of the work 65% of the work = 1080 / 35 * 65 = 14040 / 7 units The days to complete the work: 14040 / (7 * 10 * 5) = 40.11 days