A type of extra-large SUV averages 12.2 miles per gallon (mpg) on the highway, but only 7.6 mpg in the city. What is the maximum

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问题 A type of extra-large SUV averages 12.2 miles per gallon (mpg) on the highway, but only 7.6 mpg in the city. What is the maximum distance, in miles, that this SUV could be driven on 25 gallons of gasoline?

选项 A、190
B、284.6
C、300
D、305
E、312

答案D

解析 The SUV will reach its maximum distance only if driven only on the highway; 25×12.2=305.
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