SOLUTION: A contractor joined 60 man to build a house in 60 days. After 16 days he was joined by 70 men . In how many days remaining work will be complete

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Question 897788: A contractor joined 60 man to build a house in 60 days. After 16 days he was joined by 70 men . In how many days remaining work will be complete
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
It is unclear if we are starting with 60 or 61 (60 plus 1 contractor) workers
It is unclear if we are continuing with 70, 71 (70 plus 1 contractor),
130 (60 +70) or 131 (60+70+1) workers
60 workers
60*60=3600 man days
60*16=960
3600-960=2640 man days to finish the job
2640/70=37.71 days
2640/71=37.18 days
2640/130=20.31 days
2640/131=20.15 days
61 workers
60*61=3660 man days
61*16=976
3660-976=2684 man days to finish the job
2684/70=37.80 days
2684/71=37.18 days
2684/130=20.66 days
2684/131=20.148 days