SOLUTION: A family is on a road trip from Los Angeles to San Francisco. For the first 20 miles, they averaged 40mph. For the next 300 miles, they averaged 75mph. If they drive 80mph for the
Algebra.Com
Question 871269: A family is on a road trip from Los Angeles to San Francisco. For the first 20 miles, they averaged 40mph. For the next 300 miles, they averaged 75mph. If they drive 80mph for the next hour, wwhat would there average speed be for the entire trip?
A. 65
B. 72
C. 75
D. 77
I thought it would be 65, apparently the answer is B. Can someone help me understand why?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
= 72.73mph
RELATED QUESTIONS
At 6am a train traveling at 50mph leaves Los Angeles for San Francisco. Three hours later (answered by josmiceli)
a car leaves san Francisco for los Angeles going 70 mph at the same time another car... (answered by stanbon)
A car and a van leaves Los Angeles at the same time headed for San Francisco the car... (answered by Alan3354)
it is approximately 480 miles from Los Angeles california to San Francisco, California.... (answered by checkley71)
A non-stop train leaves Los Angeles for San Francisco traveling 60 mph. another train... (answered by TimothyLamb)
Driving at the rate of 70 miles per hour from San Bernardino, Ca
to Dallas Texas takes... (answered by calbreez)
a woman flies a small airplane from los angeles to san francisco and distance of 210... (answered by TimothyLamb)
Tom leaves Los Angeles at 2:00 P.M. and drives to San Francisco, a distance of 268 miles, (answered by Theo,Alan3354,ikleyn)
Ching leaves San Francisco and travels toward Los Angeles at 50 miles a hour. An hour... (answered by checkley71)