SOLUTION: Wilbur left the hardware store and traveled toward the recycling plant at an average speed of 33km/h. Mary left two hours later and traveled in the same direction but with an avera

Question 509310: Wilbur left the hardware store and traveled toward the recycling plant at an average speed of 33km/h. Mary left two hours later and traveled in the same direction but with an average speed of 55km/h. How long did Wilbur travel before Mary caught up?

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Wilbur left the hardware store and traveled toward the recycling plant at an average speed of 33km/h. Mary left two hours later and traveled in the same direction but with an average speed of 55km/h. How long did Wilbur travel before Mary caught up?
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Wilbur DATA:
rate = 33 km/h ; time = t hrs ; distance = 33t km
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Mary DATA:
rate = 55 km/h ; time = t-2 hrs ; distance 55(t-2) km
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Equation:
distance = distance
33t = 55(t-2)
33t = 55t-110
22t = 110
t = 5 hrs (time for Mary to catch up to Wilbur)
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Cheers,
Stan H.
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