Solve.Carole's car averages 12.5 mi/gal in city driving and 24.5 mi/gal in highway driving. If she drove a total of 345.5 mi on 19 gal of gas, how many of the gallons were used for city driving?
A. 10 gal
B. 12 gal
C. 14 gal
D. 9 gal
Answer: A
Mathematics
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