Source: Official Guide for the GMAT 12th Ed. Section 6.3 Data Sufficiency; #42

1

The figure above shows the circular cross section

The figure above shows the circular cross section of a concrete water pipe. If the inside radius of the pipe is r feet and the outside radius of the pipe is t feet, what is the value of r? (1) The ratio of t - r to r is 0.15 and t - r is equal to 0.3 foot. (2) The area of the concrete in the cross section is 1.29 square feet. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient., Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient., BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient., EACH statement ALONE is sufficient., Statements (1) and (2) TOGETHER are not sufficient.

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Gravatar Mike McGarry, Magoosh Tutor

Nov 12, 2012 • Comment

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Section 6.3 Data Sufficiency

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