if seven workers dig a piece of ground in 10 days.How long will 5 workers take.

5/7 as many men, so 7/5 as much time.

14 days

3 days

3 days

To find out how long 5 workers will take to dig the same piece of ground, we can use the concept of man-days.

First, let's calculate the total man-days required to dig the ground when 7 workers are working for 10 days.

Total man-days = Number of workers x Number of days
Total man-days = 7 workers x 10 days
Total man-days = 70

Since 7 workers can dig the ground in 10 days, we know that their combined effort is equal to 70 man-days.

Now let's determine how many days it would take 5 workers to complete the same amount of work.

Total man-days = Number of workers x Number of days
70 = 5 workers x Number of days

To solve for the number of days:

Number of days = Total man-days / Number of workers
Number of days = 70 man-days / 5 workers
Number of days = 14 days

Therefore, it would take 5 workers 14 days to dig the same piece of ground.