SOLUTION: A farmer employee 12 men to harvest his crops they took 9days if he had employ 16men how many days it would take them ?

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Question 1006778: A farmer employee 12 men to harvest his crops they took 9days if he had employ 16men how many days it would take them ?
Found 2 solutions by josgarithmetic, addingup:
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
RT=J relating rate, time, amount of job

Each man works at the same rate r.
Time for the 16 men is t days.
system%2812r%2A9=1%2C16%2Art=1%29

Both of those are for 1 job.
12r%2A9=16rt
3r%2A9=4rt
27=4t
t=27%2F4

%286%263%2F4%29days

Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
Convert this to man-days. If it takes 12 men 9 days, then:
(12 men) × (9 days) = 108 man-days
That is, the entire job requires 108 man-days. So if we had 16 men, then:
108/16= 6.75 days