Problema Solution
Suppose that on a round trip (1000 miles each way), you average 45 mph on the way out and then you average 65 mph on the way back. What is your average speed for the entire trip? (Remember that speed is found by taking distance divided by time.)
Answer provided by our tutors
The total distance traveled for the entire trip is: 1000 + 1000 = 2,000 mi
The time of the trip on the way out is: 1000/45 hr
The time of the trip on the way back is: 1000/65 hr
The average speed of the entire trip is:
v = 2000/(1000/45 + 1000/65)
v = 53.18 mph