A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 16.7 minutes at an average speed of 6.90 m/s. During the second part, she rides for 43.8 minutes at an average speed of 3.47 m/s. Finally, during the third part, she rides for 6.20 minutes at an average speed of 12.8 m/s.
(a) How far has the bicyclist traveled during the entire trip?
(b) What is the average speed of the bicyclist for the trip?