Answer:
There is enough fuel for the trip and the relative distance is 19 miles 
Step-by-step explanation: 
Given Sedan drives 
10 miles north 
15 miles east 
13 miles south 
15 miles west 
22 miles north 
Then total distance = 10 + 15 + 13 + 15 + 22 = 75 miles 
There are 5 gallons of gas left and sedan gets 20 miles per gallon 
20 miles = 1 gallon 
75 miles = 75/20 = 3.75 gallons 
Gas left = 5 – 3.75 = 1.25 gallon 
So, there is enough fuel for the trip 
Relative distance = 10 (north) + 15 (east) – 13 (south) – 15 (west) + 22 (north) = 19 miles