This morning, Taryn drove 13 miles to the library and then returned home. In the afternoon, she drove 9 miles to the movies and returned home. How much farther did Taryn travel in the morning?
The total distance traveled in the morning was 13 × 2 = 26 miles. The total distance traveled in the afternoon was 9 × 2 = 18 miles. The difference between the two distances is 26 – 18 = 8 miles.