SOLUTION: Can you please help me start this problem? A car traveled at 50 miles per hour for 150 miles and then traveled at 75 miles per hour for 150 miles. What was the car’s average spe

Question 617612: Can you please help me start this problem?
A car traveled at 50 miles per hour for 150 miles and then traveled at 75 miles per hour for 150 miles. What was the car’s average speed?

Found 2 solutions by Alan3354, stanbon:
Answer by Alan3354(30993) (Show Source):
You can put this solution on YOUR website!

A car traveled at 50 miles per hour for 150 miles and then traveled at 75 miles per hour for 150 miles. What was the car’s average speed?
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d = r*t
t = d/r
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Find the times for the 2 segments.
Add them.
Add the two distances.
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d = r*t
r = d/t

Answer by stanbon(57361) (Show Source):
You can put this solution on YOUR website!
A car traveled at 50 miles per hour for 150 miles and then traveled at 75 miles per hour for 150 miles. What was the car’s average speed?
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1st leg data:
rate = 50 mph ; distance = 150 miles ; time = 150/50 = 3 hrs
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2nd leg data
rate = 75 mph : distance = 150 miles ; time = 150/75 = 2 hrs
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Average time = (total distance)/(total time) = 300 miles/5 hrs = 60 mph
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cheers,
Stan H.
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