Question 527361: A car uses 12 L of gasoline in traveling 150km. At that rate, how many liters of gasoline will be used in a trip of 400km? Answer by oberobic(2304) (Show Source):
You can put this solution on YOUR website! The units of measure will help you understand what to do.
You need to know the km/liter.
You are told it will go 150 km on 12 liters.
150/12 km/l = average rate of fuel burned
Dividing 400 km by (150/12 km/liter) = 400 km * 12 liters / 150 km = 32 liters.
To go 400 km will take 32 liters.
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We can check this with proportions:
150/400 = 12/32 ??
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Cross multiply
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32*150 = 12*400 ??
32*150 = 4800
12*400 = 4800
Correct.
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Answer: It will take 32 liters to go 400 km.
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