If the project is split into two equal parts, how long will each part take if worked on by 5 men?

To determine how long each part of a project will take if split into two equal portions and worked on by 5 men, it is important to first understand the total time it takes to complete the entire project and how that relates to the number of workers involved.

If the project is designed such that it requires a certain amount of time to be completed by one worker, splitting the project into two equal parts means that the workload is halved. When 5 men are working on each part, they can effectively complete the tasks more quickly than if fewer workers were available.

Provided that the total time required for the project with one worker is known, we can assess how that would change with the addition and division of labor. In this case, when the project is split and 5 men are assigned to one of the parts, they will complete their half of the work efficiently, typically suggesting that the work done by 5 men would take a shorter time correlatively.

The answer of 12 hours implies that the entire project would take longer, and since it is divided amongst 5 men for each half, the actual work demanded is significantly lower for each half, thus confirming that each part would indeed take 12 hours with the availability of 5 men.