Problema Solution
In the morning , maria drove to a business appointment at 40 mph. Her average speed on the return trip in the afternoon was 30 mph. The return trip took 1/3 hr longer because of heavey traffic. How far did she travel to the appointment?
Answer provided by our tutors
D = SXT
40*t = 30*(t + 1/3)
40t = 30t + 10
t = 1
so D = S X t = 40*1 = 40 miles