In State X, the sales tax on electronics is equal to 10 percent of the amount of the purchase price above $100. In State Y, the sales tax on electronics is equal to 8 percent of the entire purchase price. For what purchase price would the sales tax in both states be equal?

(A) $180

(B) $200

(C) $400

(D) $500

(E) $600

Click through to the GMAT Hacks website for the answer and explanation.

]]>If xyz < 0 and yz > 0, which of the following must be positive?

(A) xy

(B) xz

(C) (x^2)yz

(D) x(y^2)z

(E) xy(z^2)

Click through to the GMAT Hacks website for the answer and explanation.

]]>If x^2 - y^2 = 27, what is the value of (x + y)^2 ?

(1) y = 3

(2) x - y = 3

(A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

(B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

(C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

(D) EACH statement ALONE is sufficient.

(E) Statements (1) and (2) TOGETHER are NOT sufficient.

Click through to the GMAT Hacks website for the answer and explanation.

]]>What is the value of 0.5(x^2) - 1.4x - 0.7 for x = 1.4 ?

(A) -0.28

(B) -0.54

(C) -0.72

(D) -1.42

(E) -1.68

Click through to the GMAT Hacks website for the answer and explanation.

]]>For all numbers a and b, the operation @ is defined by a @ b = a^b + b. If x @ 3 = 2, then x =

(A) -3

(B) -2

(C) -1

(D) 1

(E) 2

Click through to the GMAT Hacks website for the answer and explanation.

]]>Is xy > 7 ?

(1) x + y = 7

(2) 1 ≤ x ≤ 3 and 2 ≤ y ≤ 4

(A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

(B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

(C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

(D) EACH statement ALONE is sufficient.

(E) Statements (1) and (2) TOGETHER are NOT sufficient.

Click through to the GMAT Hacks website for the answer and explanation.

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