Answer :

Final answer:

67 men would need 42 days (or 6 weeks) to build a wall which 134 men can build in 21 days (or 3 weeks). This is because the number of men and the time taken are inversely proportional.

Explanation:

This is a problem of direct and inverse proportion. First, we have to understand that if more men are working, the time it takes to finish the job decreases. This means that the number of men and the time to do the work are inversely proportional. Therefore, if 134 men can build a wall in 3 weeks (or 21 days), 67 men would take twice as long. This is because 134 men is double of 67, and thus, half as many men would take twice as long. So, 67 men would need 42 days (or 6 weeks) to build the wall.

So, it would take 67 men approximately 42 days to build the same wall that 134 men can complete in 3 weeks. This difference in time is due to the fact that there are fewer workers in the first scenario, which means the work will take longer to finish.

Learn more about Inverse Proportion here:

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