SOLUTION: twelve men can finish the job in 20 days. Five men were working at the start and after 10 days 5 men were added. How many days will it take to finish the job?

Question 919065: twelve men can finish the job in 20 days. Five men were working at the start and after 10 days 5 men were added. How many days will it take to finish the job?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
twelve men can finish the job in 20 days. Five men were working at the start and after 10 days 5 men were added. How many days will it take to finish the job?
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twelve men can finish the job in 20 days=12*20=240 man-days
5 men working 10 days=50 man-days
15 men working x days=15x man-days
50+15x=240
15x=190
x=12 2/3
How many days will it take to finish the job? 12 2/3 days
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