Andrew Geller

A square wooden plaque has a square brass inlay in the center, leaving a wooden strip of uniform width around the brass square. If the ratio of the brass area to the wooden area is 25 to 39, which of the following could be the width, in inches, of the wooden strip? I. 1 II.

The sum of all the integers k such that −26 < k < 24 is (A) 0 (B) −2 (C) −25 (D) −49 (E) −51 Correct Answer: D Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons of practice questions, explanations for GMAT Official

The graph of which of the following equations is a straight line that is parallel to line l in the figure above? (A) 3y − 2x = 0 (B) 3y + 2x = 0 (C) 3y + 2x = 6 (D) 2y − 3x = 6 (E) 2y + 3x = −6 Correct Answer: A

If 1/x – 1/(x+1) = 1/(x+4), then x could be A. 0 B. -1 C. -2 D. -3 E. -4 Correct Answer: C Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons of practice questions, explanations for GMAT Official Guide questions, and strategies on

The interior of a rectangular carton is designed by a certain manufacturer to have a volume of x cubic feet and a ratio of length to width to height of 3:2:2. In terms of x, which of the following equals the height of the carton, in feet? A. ^3√x B. ^3√(2x/3) C. ^3√(3x/2) D. 2/3∗^3√x