SOLUTION: Sara traveled to Portland by car. Going there took 8 hours, and the return trip lasted 3 hours. Sara averaged a speed of 45 mph while returning. What was her average speed going th

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Question 1149609: Sara traveled to Portland by car. Going there took 8 hours, and the return trip lasted 3 hours. Sara averaged a speed of 45 mph while returning. What was her average speed going there?
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
               SPEED     TIME        DISTANCE
GOING             g        8            d

RETURN           45        3            d

Same distance each way

8g=3%2A45

g=3%2A45%2F8-----------simplify this.

about 17 mph