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A car traveled 462 miles per tankful of gasoline on the highway and 336 miles pe
A car traveled 462 miles per tankful of gasoline on the highway and 336 miles pe
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2024-01-13
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问题
A car traveled 462 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city.If the car traveled 6 fewer miles per gallon in the city than on the highway,how many miles per gallon did the car travel in the city?
选项
A、14
B、16
C、21
D、22
E、27
答案
B
解析
Let g be the number of gallons of gasoline in1 tankful. Then the number of miles per gallon while traveling on the highway is 462/g and this number is 6 more than 336/g,which is the number of miles per gallon while traveling in the city.
Solving462/g= 6 +336/g gives g = 21. Therefore, the number of miles per gallon while the car was traveling in the city was336/21= 16.
The correct answer is B.
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