Maryanne drove to a friend's house at an average rate of 55 miles per hour. She
took the same route on the way back, and her average rate was 45 miles per
hour. If she spent a total of 2 hours driving, how far did she drive in all?
Rate
(mi/h)
Time
(h)
Distance
(mi)
t
Trip to Friend's
55
Trip Home
45
62-t
45(2 – t)