Discussion :: Chain Rule
- If 16 men working 7 hours a day can plow a field in 48 days, in how many days will 14 men working 12 hours a day plow the same field?
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Answer : Option B
Explanation :
Let the one-day work = number of men* total working hours per day
Now, the ratio of total work = (14*12): (16*7)
Now, the ratio of days = 48: x
Where x is the required number of days
Now, one day work is inversely proportional to the number of days:
So, (14*12): (16*7) = 48: x
Or, x = (48*16*7)/ (14*12) = 32
Therefore, 32 days are required to plow the same field.
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