Answer:
it will take one man 18 hours to dig the three holes
Explanation:
To solve this problem, we can set up a simple relation as follows:
4 men dig two holes in 3hours
4 men will dig 1 hole in x hours.
2 holes => 3 hours
1 hole => x hours
x = (1 X 3)/2 = 1.5 hours
Therefore, 4 men will dig 1 hole in 1.5 hours.
From this, we can find how long it will take 1 man to dig 1 hole
if 4men dig a hole in 1.5 hours
1 man will dig 1 hole in x hours
4 X 1.5 = 6 hours
1 man will dig 1 hole in 6 hours
finally, if 1 man digs a hole in 6 hours, it will take the man 6 hours X 3 to dig 3 holes = 18hours
it will take one man 18 hours to dig the three holes