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This problem trains for: SAT-I, AMC-8, GMAT.
In the year 2000, 20% of the population of the USA was in panic about the possibility of widespread computer failures.
In 2007, 40% of the population started panicking about the rising cost of petroleum.
In the population increased 2% per year between 2000 and 2007, what fraction of the population that was in panic in 2000 does the population that was in panic in 2007 represent?
Denote the total population of the US in 2000 by N. Then, the count of the population that was in panic in 2000 is:
What was the population count in 2007? Well, each year it increased by 2%:
Of the 2007 population, 40% was in panic:
The fraction of population that was in panic in 2007 represents:
of the population that was in panic in 2000.
The closest answer is D.