Question

Some men can complete a work in 40 days.
If there were more men to do the work then
the same work would be finished in
25 days. How many men were at the
beginning?​

Answer 1

Day is indirectly variated with workers.

When day decreases, the workers increases.

DW=k ( k is a variation constant )

k =40x

D'W'=k

25w = 40x

x= 0.625w

you have to give the number of workers once to have another as a result

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