Bunuel wrote:
A marketing research firm keeps track of gasoline consumption per motor vehicle in the United States. If the gasoline consumption increased by 23% and the number of motor vehicles increased by 64%, what is the percent change in the gasoline consumption per motor vehicle?
(A) a 13% decrease
(B) a 20% increase
(C) a 25% decrease
(D) a 41% increase
(E) a 87% decrease
let earlier car to gasoline = 100 each
now car= 164 and gasoline = 123
so % change gasoline per motor vehicle ; 123-164/164 =
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