SOLUTION: A bus traveled 387 km in 5h. One hour of the trip was in the city traffic. The bus's city speed was just half of its speed on the open highway. The rest of the trip was on open hig

Question 329993: A bus traveled 387 km in 5h. One hour of the trip was in the city traffic. The bus's city speed was just half of its speed on the open highway. The rest of the trip was on open highway. Find the bus's city speed.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A bus traveled 387 km in 5h. One hour of the trip was in the city traffic. The bus's city speed was just half of its speed on the open highway. The rest of the trip was on open highway. Find the bus's city speed.
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City travel DATA:
time = 1 hr ; rate = x km/h ; distance = rt = x km
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Hyw travel DATA:
time = 4 hr ; rate = 2x km/h ; distance = rt = 8x km
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Equation:
distance + distance = 387 km
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x + 8x = 387 km
9x = 387
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43 km/h (bus's city speed)
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Cheers,
Stan H.
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