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6 men can complete a piece of work in 12 days. 8 women can complete the same piece of work in 18 days whereas 18 children can complete the piece of work in 10 days. 4 men, 12 women and 20 children work together for 2 days. If only men were to complete the remaining work in 1 day how many men would be required totally?

Correct Answer: 36

Explanation:

Given 4men, 12 women and 20 children work for  2 days.


Workdone for 2 days by 4men, 12 women and 20 children =  4   x   2 6   x   12   +   12   x   2 8   x   18   +   20   x   2 18   x   10   =   1 2


Therefore, remaining work = 1 -  1 2  =  1 2


To complete the same work by only men in 1 day,


We know that M1 x D1 = M2 x D2


Here M1 = 6 , D1 = 12 and M2 = M , D2 = 1


12 x 6 = M x 1


=> M = 12 x 6 = 72


=> But the remaining work = 1/2


Men required => 1/2 x 72 = 36


Only men required to Complete the remaining work in 1 day = 36.


 


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