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# A marketing research firm keeps track of gasoline consumption

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Senior Manager
Joined: 26 Dec 2015
Posts: 253
Location: United States (CA)
Concentration: Finance, Strategy
WE: Investment Banking (Venture Capital)
A marketing research firm keeps track of gasoline consumption  [#permalink]

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23 Apr 2017, 09:43
1
00:00

Difficulty:

35% (medium)

Question Stats:

75% (02:18) correct 25% (02:22) wrong based on 79 sessions

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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
Senior Manager
Joined: 02 Mar 2017
Posts: 259
Location: India
Concentration: Finance, Marketing
Re: A marketing research firm keeps track of gasoline consumption  [#permalink]

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23 Apr 2017, 21:32
1
Number of motorcycles -- 100
Consumption -- 100

Consumption increased by 23%
Number of vehicles Increased By 64%

(100+23)/(100+64)

Approximately .75 ----> 25% decrease
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Director
Joined: 13 Mar 2017
Posts: 718
Location: India
Concentration: General Management, Entrepreneurship
GPA: 3.8
WE: Engineering (Energy and Utilities)
Re: A marketing research firm keeps track of gasoline consumption  [#permalink]

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05 Jul 2017, 06:00
LakerFan24 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 initial gasoline consumption be G
Present gasoline consumption = 1.23 G

Let initial no. of motor vehicle be M
Present no. of motor vehicles = 1.64 M

So, Earlier ratio of gasoline consumption to motor vehicle = G/M
Present ration of gasoline consumption to motor vehicle = 1.23G/1.64 M = 123G/164 M = 0.75 G/M

Percentage change = 25 % decrease.

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Re: A marketing research firm keeps track of gasoline consumption   [#permalink] 05 Jul 2017, 06:00
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