SOLUTION: 12 farmers harvest the crops in the field in 20 hours.how many workers will be required to do the same work in 15 hours

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Question 1054476: 12 farmers harvest the crops in the field in 20 hours.how many workers will be required to do the same work in 15 hours
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
"Harvest the crops in the field" is one whole job.

Constant Work Rate Rule is RT=J and here, unit for T is HOURS, and unit for J is JOB; and you are mostly dealing with 1 JOB.

r is the work rate for ONE farmer, and n is the unknown number of farmers in the question.

system%2812%2Ar%2A20=1%2Cn%2Ar%2A15=1%29

Answer by ikleyn(52785) About Me  (Show Source):
You can put this solution on YOUR website!
.
12 farmers harvest the crops in the field in 20 hours.how many workers will be required to do the same work in 15 hours
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According to the condition, it requires 12*20 = 240 man-hours to harvest the crop in the field.


To do the same in 15 hours, it requites 240%2F15 = 16 workers.

Solved.