Answer: It would take approximately 77 days to arrive at Roanoke Island.
Explanation:
Given : Total distance need to be traveled = 540 miles
If they travel 70 miles per day , the number of days require to cover above distance = [tex](\text{Total distance]} )\div 70\ \text{ miles}[/tex]
[tex]=(540\div 70)\text{ miles}[/tex]
[tex]= 77.142\approx77\text{ days}[/tex]
Hence, it would take approximately 77 days to arrive at Roanoke Island.