Telluride, Colorado, is 45 air miles at 11 east of north of Durango. On a winter day,

Question:

Telluride, Colorado, is 45 air miles at 11° east of north of Durango. On a winter day, Chuck drove 120 mi from Durango to Telluride around a mountain in 4¼ h including a traffic delay. Find
(a) His average driving speed
(b) His average travel velocity.