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12 Days of Christmas GMAT Competition with Lots of Fun
In country X, the annual expenditure on gasoline in 2005 was $200 billion. What was the expenditure in 2006?
(1) Between 2005 and 2006, the price of gasoline increased by 25% and consumption decreased by 20%.
(2) At the price in 2006, if country X consumed 20% more than what it actually did, the expenditure would have been $240 billion in 2006.
In country X, the annual expenditure on gasoline in 2005 was $200 billion. What was the expenditure in 2006?
(1) Between 2005 and 2006, the price of gasoline increased by 25% and consumption decreased by 20%.
(2) At the price in 2006, if country X consumed 20% more than what it actually did, the expenditure would have been $240 billion in 2006.
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18 Dec 2021, 08:00
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Bunuel
12 Days of Christmas GMAT Competition with Lots of Fun
In country X, the annual expenditure on gasoline in 2005 was $200 billion. What was the expenditure in 2006?
(1) Between 2005 and 2006, the price of gasoline increased by 25% and consumption decreased by 20%.
(2) At the price in 2006, if country X consumed 20% more than what it actually did, the expenditure would have been $240 billion in 2006.
In country X, the annual expenditure on gasoline in 2005 was $200 billion. What was the expenditure in 2006?
(1) Between 2005 and 2006, the price of gasoline increased by 25% and consumption decreased by 20%.
(2) At the price in 2006, if country X consumed 20% more than what it actually did, the expenditure would have been $240 billion in 2006.
Expert's Global Official Video Explanation
General Discussion
17 Dec 2021, 07:18
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Given: In country X, the annual expenditure on gasoline in 2005 was $200 billion.
Asked: What was the expenditure in 2006?
(1) Between 2005 and 2006, the price of gasoline increased by 25% and consumption decreased by 20%.
2005: -
Let price of gasoline be $x/gallons
Annual expenditure on gasoline = $200 billion
Annual consumption of gasoline = $200/x billion gallons
2006:-
Price of gasoline = (1+25%)x = 1.25x
Annual consumption of gasoline = (1-20%)*200/x = .8*200/x = $160/x billion gallons
Annual expenditure on gasoline = 1.25x *160/x = $200 billion
SUFFICIENT
(2) At the price in 2006, if country X consumed 20% more than what it actually did, the expenditure would have been $240 billion in 2006.
Let the annual expenditure be $x billion in 2006
(1+20%) *x = 1.2x = $240 billion
x = $200 billion
SUFFICIENT
IMO D
Asked: What was the expenditure in 2006?
(1) Between 2005 and 2006, the price of gasoline increased by 25% and consumption decreased by 20%.
2005: -
Let price of gasoline be $x/gallons
Annual expenditure on gasoline = $200 billion
Annual consumption of gasoline = $200/x billion gallons
2006:-
Price of gasoline = (1+25%)x = 1.25x
Annual consumption of gasoline = (1-20%)*200/x = .8*200/x = $160/x billion gallons
Annual expenditure on gasoline = 1.25x *160/x = $200 billion
SUFFICIENT
(2) At the price in 2006, if country X consumed 20% more than what it actually did, the expenditure would have been $240 billion in 2006.
Let the annual expenditure be $x billion in 2006
(1+20%) *x = 1.2x = $240 billion
x = $200 billion
SUFFICIENT
IMO D
