42 women can do a piece of work in 18 days, how many women requires to do the same work in 21 days?

42 women can do a piece of work in 18 days, how many women requires to do the same work in 21 days?

 

Solution:

M1D1/W1=M2D2/W2

we know that work is same so

W1=W2 ( Cancel both sides)

M1D1=M2D2

48 x 18=M2 x 21

M2=(42 x 18/21)

M2=36women

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