If 30 men can reap a field in 15 days then how many days can 20 men reap the same field. Solve using unitary method
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Answer: 20 men would complete the work is 22 and 1/2 days
Step-by-step explanation:
We can use unitary method and also unitary method would be the easiest method to solve this question
30 men ———— 15 days
20 men ———— (30 * 15) / 20
In normal unitary method, we would have cross multiplied and solved the question, but this is solved using inverse proportionality as less number of men will take more number of days to do the work, and more number of men would take less number of days to do the same work
Using this concept, 20 men would take (30 * 15) / 20 days
=> 45/2 = 22.5 days
Therefore 20 men would complete the same work is 22 and 1/2 days
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