Question

3. If 36 men can do a piece of work in 25 days, in how many days will 15 men do the
same work?

Answer 1

Given -

36 men can do a piece of work in 25 days.

To find -

15 men do the work in how many days

Solution -

Let, 15 men do the work in x days.

As, we have to complete the same work.

36 men can do a piece of work in 25 days.

Total work =

$36 \times 25$

15 men do the work in x days.

Total work

$= 15 \times x$

So, equate both the terms

$36 \times 25 = 15 \times x$

$x = \frac{36 \times 25}{15}$

Divide 15 and 25 by 5 we get

$x = \frac{36 \times 5}{3}$

Divide 36 by 3 we get

$x = 12 \times 5$

$x = 60$

Hence,

15 men do the work in 60 days .

Answer 2

Step-by-step explanation:

Given that

36 men can do a piece of work in 25 days

To find

day require to work by 15 men

Solution

let x is the days require for 15 men

then

$x \times 15 = 25 \times 36 \\ x = \frac{25 \times 36}{15}$

$x = \frac{5 \times 36}{3}$

$x = \frac{180}{3} \\ x = 60$

hence 60 days require to do work by 15 mens