7-121. Ryan and Janelle are driving from different locations to meet at Mammoth Lakes. When they each stopped for lunch, they called each other on
their cell phones. Ryan had traveled 245 miles in 3½ hours. Janelle had driven 260 miles in 4 hours.
a. How fast was each person driving?
b. If Janelle originally started 575 miles from Mammoth Lakes and continues traveling at the same rate (from part (a)), how many more
hours will it take her to arrive at her destination?
