GMAT Quantitative Reasoning Practice Test 8

Question : 7 of 76

Marks: +1, -0

A turtle is crossing a field, how many meters total did he pass?
(1) The average speed of the turtle is 2 meters per minute.
(2) Had the turtle walked 1 meter per minute faster than his average speed it would have finished the same path 40 minutes earlier.

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:

Statement (1) gives us the average speed of the turtle; this statement is insufficient since the time is not given.
Statement (2) is also insufficient by itself since we don't know what the average speed is.
Both statements combined are sufficient since we can calculate the distance

2 × T=D

and

3(T-40)=D

, solve to get

D=240

meters.

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