If it takes 25 men 72 days to build the road, we can write:
25 x 72 = 1800
This means that 25 men can complete 1800 units of work in 72 days.
Now, let's say 20 more men are hired at the beginning of the construction. This means that there are now 45 men working on the road. Let's use the same formula.
45 x time = 1800
time = 1800/45
time = 40
Therefore, with 45 men working on the road, it would take 40 days to complete the same amount of work.
To find out how many days sooner the road would be done, we can subtract the new time from the original time:
72 - 40 = 32
So the road would be done 32 days sooner if 20 more men were hired at the beginning of the construction.
Answers & Comments
Answer:
Let's use the formula:
number of workers x time = amount of work
If it takes 25 men 72 days to build the road, we can write:
25 x 72 = 1800
This means that 25 men can complete 1800 units of work in 72 days.
Now, let's say 20 more men are hired at the beginning of the construction. This means that there are now 45 men working on the road. Let's use the same formula.
45 x time = 1800
time = 1800/45
time = 40
Therefore, with 45 men working on the road, it would take 40 days to complete the same amount of work.
To find out how many days sooner the road would be done, we can subtract the new time from the original time:
72 - 40 = 32
So the road would be done 32 days sooner if 20 more men were hired at the beginning of the construction.