Answer :

Using proportion, it is found that 25 men will require 8 days to build a 60-meter wall.

In the given , we have 50 men who can build a 300-meter wall in 20 days. This means that the total amount of work done by these 50 men in 20 days is:

50 men x 20 days = 1000 men-days.

Set up a proportion using the concept of men-days:

1000 men-days / 300 meters = x men-days / 60 meters

300x men-days = 1000 (60) meters

Simplifying the equation, we have:

300x = 60000

x = 200

So, it would take 200 men-days for 25 men to build a 60-meter wall.

Since we are interested in finding the number of days, we can divide the total men-days by the number of men:

200 men-days / 25 men = 8 days

Therefore, 25 men will require 8 days to build a 60-meter wall.

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