Question

36 men can do a work in 12 days. In how many days9 men can do the same work​

Answer 1

Step-by-step explanation:

In 3 days 9 men can do the same work

Answer 2

Answer:

Given

No. of days, 36 men can do a work = 12

No. of days, 9 men can do a work = ??

Let the number of men and the number of days, given in the first statement be M1 and D1, respectively.

Let the number of men and the number of days, given in the second statement be M2 and D2, respectively.

Here,

The number of men is inversely proportional to the number of days.

=> M1 × D1 = M2 × D2 ( Formula )

Substitute the values of M1, D1, M2, D2 in the formula.

=> 36 × 12 = 9 × D2 ( Here, D2 is put as it is since, the value is unknown. )

=> ( 36 × 12 ) / 9 = D2

=> 4 × 12 = D2 ( 36 gets cancelled by 9 )

=> 48 = D2

Hence, 9 men can do the same work in 48 days.

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