SOLUTION: 12 men can do a job in 8 days. If after 5 days,they are joined by 4 more men, how many more days would they take to finish the job
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Question 679448: 12 men can do a job in 8 days. If after 5 days,they are joined by 4 more men, how many more days would they take to finish the job
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
12 men can do a job in 8 days.
Find the number of man-days required to do the job
12*8 = 96 man-days
:
If after 5 days,they are joined by 4 more men, how many more days would they take to finish the job
:
let d = additional days required to complete the job
8(d+5) + 4d = 96
8d + 40 + 4d = 96
12d = 96 - 40
12d = 56
d = 56/12
d = 4 days to finish the job
:
:
:
See if that checks out, using decimals
8(4.67+5) + 4(4.66) =
77.36 + 18.68 = 96.04 ~ 96 man-hrs
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