Answer:
500 meters =20men =10days
To get the factor 500/(20*10)= 5/2 meters/day
For 50 men and 5days we don't know the meters
So we go by 50*(5/2)*5 =625meters
A) the only mistake is changing the mixed number to an improper fraction .
Answer:

Step-by-step explanation:
first things first:

now:

now the intersection is:
