SOLUTION: The number of gallons of fuel used on a trip varies directly with the number of miles traveled. If a trip of 200 miles required 12 gallons of fuel, how many gallons are required fo

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Question 1179893: The number of gallons of fuel used on a trip varies directly with the number of miles traveled. If a trip of 200 miles required 12 gallons of fuel, how many gallons are required for a trip of 300 miles? Be sure to respond in a complete sentence that explains your answer in relation to the question.
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52784)   (Show Source):
You can put this solution on YOUR website!
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Make a relevant proportion = . From the proportion, find x x = = = 6*3 = 18 gallons. ANSWER

Solved.

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On proportions, see the lessons
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Answer by josgarithmetic(39617)   (Show Source):
You can put this solution on YOUR website!
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The number of gallons of fuel used on a trip varies directly with the number of miles traveled.
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v, gallons of fuel
d, distance traveled, miles
k, variation constant

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..., a trip of 200 miles required 12 gallons of fuel,
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