Question

36 men can do a piece of work in 12 days. In how many days 9 men can do the same work?

Answer 1

use formula ,
M1D1 =M2D2

where M1 is the no of people initial do work , D1 no of days take by people in initial
M2 is finally no of people do work and D2 is no of days take by people in final
now,
36 x 12 = 9 x D2
D2=48
hence ,
In 48 days 9 men do same work

Answer 2

Hi friend,

This is a inverse proportion question.

36 men=12 days
9 men=x days

Now let's find x,
In inverse proportion we will do-:

36*12=9*x
36*12/9=x
48=x
x=48 days.

Hence,48 days will be taken by 9 men to complete a work.

Hope it helped you..................