15 men can build a 16.25 -m- long wall up to a certainj height in one day. How many men should be employed to build a wall of the same height but of length 26 metres in one day?

Answer

To solve the problem, we can use the Unitary Method. Here’s the step-by-step solution:

### Step 1: Determine the length of the wall that can be built by one man in one day.
We know that 15 men can build a wall of 16.25 meters in one day. To find out how much one man can build in one day, we divide the total length of the wall by the number of men.

\[ \text{Length built by 1 man in 1 day} = \frac{16.25 \text{ m}}{15 \text{ men}} = 1.0833 \text{ m/man} \]

### Step 2: Calculate the total length of the wall to be built.
The length of the new wall is given as 26 meters.

### Step 3: Determine how many men are needed to build the 26-meter wall in one day.
Now, we need to find out how many men are required to build a wall of 26 meters in one day. We can use the length that one man can build in one day to find this out.

\[ \text{Number of men required} = \frac{\text{Total length of the wall}}{\text{Length built by 1 man in 1 day}} = \frac{26 \text{ m}}{1.0833 \text{ m/man}} \approx 24 \]

### Final Answer:
Therefore, approximately **24 men** should be employed to build a wall of 26 meters in one day.

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