SOLUTION: Laura drives home to her city at a distance of 380km. She takes the Backroads at a speed of 50km/h and she takes the highways at 100km/h. The trip takes 5h. How far does she drive
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Question 939198: Laura drives home to her city at a distance of 380km. She takes the Backroads at a speed of 50km/h and she takes the highways at 100km/h. The trip takes 5h. How far does she drive on each road? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Laura drives home to her city at a distance of 380km. She takes the Backroads at a speed of 50km/h and she takes the highways at 100km/h. The trip takes 5h. How far does she drive on each road?
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Equations:
b + h = 380 km
b/50 + h/100 = 5 hrs
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b + h = 380
2b + h = 500
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b = 120 km (distance on backroads)
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h = 380-120 = 260 km (distance on highways)
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Cheers,
Stan H.
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