Problema Solution
A car that averages 16 miles per gallon of gasoline for city driving and 26 miles per gallon for highway driving uses 12 gallons in 262 miles of driving. How much of the driving was city driving?
Answer provided by our tutors
Let 'x' represent the miles of the city driving then 262 - x are the miles of the highway driving.
x/16 + (262 - x)/26 = 12
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click here to see the equation solved for x
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x = 80 mi
80 miles of the driving was city driving.