2. if 20 men can complete a job in 4 days. How many men will be required to finish the work in 40 days?
Solution:
Solution:
Suppose x men will be required to complete the job in 40 days
∵ To complete a job in 4 days the required men are 20 .
∴ To complete the job in 1 day the required men are 20×4 . | ( explanation: in 1 day more men will be needed to complete the same job, therefore for more men multiplication has been done.) |
∴ To complete the job in 40 days the required men are (20×4)/40 . | explanation:lesser number of men will be needed to complete the job in 40 days in comparison to one day. Therefore division has been by 40 |
= 80/40 = 2 men Ans. |  |
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