GMAT Quantitative Reasoning Practice Test 8

Question : 30 of 76

Marks: +1, -0

0 In the past few years, the import of cars to Italy increased significantly. In the years 1994 to 2001 the number of imported cars increased by 12% each year. How many cars were imported to Italy in
the year 2000?
(1) In 1997, 12,500 cars were imported to Italy.
(2) During the years 1997 to 1999, 42,180 cars total were shipped to Italy.

Statement (1) BY ITSELF is sufficient to answer the question, but statement (2) by itself is not.
Statement (2) BY ITSELF is sufficient to answer the question, but statement (1) by itself is not.
Statements (1) and (2) TAKEN TOGETHER are sufficient to answer the question, even though NEITHER statement BY ITSELF is sufficient.
Either statement BY ITSELF is sufficient to answer the question.
Statements (1) and (2) TAKEN TOGETHER are NOT sufficient to answer the question, requiring more data pertaining to the problem

Validate

Solution:

From the question we know that the number of cars grew by 12% each year.
From (1) we can learn that if in 1997 12,500 cars were shipped then in 1998

(1.12 × 12.500)

cars were shipped and so on until 2000. This statement is sufficient.
From (2) we can learn that during a certain period 42,180 cars were shipped, if you define X as the number of cars that were shipped in 1997 then:

42,180 = X + 1.2X + 1.2(1.2X)

and so we can find X and anything else we wish to find. Either statement alone is sufficient

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