SOLUTION: After leaving Moose Jaw, Hanson drove 200 kilometers at x km/hr and then decreased his speed by 20 km/hr and drove 240 additional kilometers. Write a rational expression for his

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Question 197329: After leaving Moose Jaw, Hanson drove
200 kilometers at x km/hr and then decreased his speed by
20 km/hr and drove 240 additional kilometers. Write a rational expression for
his total traveling time. Evaluate the expression for x = 100.
Answer by stanbon(48558) (Show Source):
You can put this solution on YOUR website!
After leaving Moose Jaw, Hanson drove
200 kilometers at x km/hr and then decreased his speed by
20 km/hr and drove 240 additional kilometers. Write a rational expression for
his total traveling time. Evaluate the expression for x = 100.
-------------------
time = distance/rate
----------------------
Equation:
Total time = 200/x + 240/20
Total time = 200/x + 12
T(100) = 200/100 + 12
T(100) = 2 + 12 = 14 hours.
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Cheers,
Stan H.