Answer:
31/20 miles
Step-by-step explanation:
Given that:
Lowest point = 4/5 miles below sea level
Highest point = 6/8 miles above sea level
Difference between lowest and highest point :
Point below sea level are represented as negative ; Hence, lowest point = - 4/5 miles
Highest point = 6/8 miles
Difference between lowest and highest point :
6/8 miles - (-4/5) miles
(6/8 + 4/5) miles
= (30 + 32) = 62/40 miles = 31/20 miles