Answer:
The tourist's average speed was 80 mph
Explanation:
Average Speed
If an object travels a distance d in a time t regardless of the direction, the average speed is the quotient of the distance over the time:
[tex]\displaystyle v=\frac{d}{t}[/tex]
The tourist leaves Pittsburgh and travels 60 miles South in 45 minutes. Then he heads West and travels 100 miles in 1 hour and 15 minutes.
The total distance traveled is:
d = 60 miles + 100 miles = 160 miles
The total time is:
t = 45 minutes + 1 hour + 15 minutes = 2 hours
The average speed is:
[tex]\displaystyle v=\frac{160}{2}[/tex]
v = 80 mph
The tourist's average speed was 80 mph
