GMAT Quantitative Reasoning Practice Test 8

Question : 25 of 76

Marks: +1, -0

From January 1948 to March 1981, the value of an antique house in the downtown area tripled. What was its value back in January 1948 ?
(1) From March 1981 to September 2001, the value of the house doubled.
(2) The value of the house in September 2001 was

\$ 300,000

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:

Use both statements and solve the problem backwards.
In 2001 the value was

\$300,000

, which is double the value in 1981. In 1981, the value of the house was

\$150,000

, which is triple the value in 1948.
In 1948, the value of the house was

\$50,000

.
Both statements, taken together, are sufficient.

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