Question 1055217: Maria took a trip to visit her grandmother. She traveled first by train at 80 kilometers
per hour, and then by car at 90 kilometers per hour. It took Maria a total of 3 hours
to travel a total distance of 265 kilometers. Which of the following equations could be
used to solve for tc
, the time in hours that she traveled by car?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Maria took a trip to visit her grandmother. She traveled first by train at 80 kilometers per hour, and then by car at 90 kilometers per hour.
It took Maria a total of 3 hours to travel a total distance of 265 kilometers. Which of the following equations could be used to solve for tc
, the time in hours that she traveled by car?
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Train DATA:
rate = 80 km/h ; time = t hrs ; distance = 80t km
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Car DATA:
rate = 90 km/h ; time = 3-t hrs ; distance = 90(3-t) km
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Equation:
Train distance + Car distance = 265 km
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80t + 270-90t = 265 km
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Cheers,
Stan H.
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