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Question 409746: A jet took one hour longer flying to Las Vegas from Denver at 800 km/h than to return at 1,200 km/h. Find the DISTANCE from Las Vegas to Denver.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A jet took one hour longer flying to Las Vegas from Denver at 800 km/h than to return at 1,200 km/h. Find the DISTANCE from Las Vegas to Denver.
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L to D DATA:
rate = 800 km/h ; distance = x km ; time = x/800 hrs
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D to L DATA:
rate = 1200 km/h ; distance = x km ; time = x/1200 hrs
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Equation:
time - time = 1 hr
x/800 - x/1200 = 1
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Multiply thru by 2400
3x - 2x = 2400
x = 2400 km (distance from L to D)
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Cheers,
Stan H.
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