If k > 0, x + k = y, and y + 3k = z, what is the ratio between z – x and y – x ?

(A) 1 to 4

(B) 1 to 2

(C) 2 to 1

(D) 3 to 1

(E) 4 to 1

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

]]>If a = (1/4)b and c = 7a, then which of the following represents the average (arithmetic mean) of a, b, and c, in terms of a ?

(A) a + 4

(B) (11/3)a

(C) 4a

(D) (4 1/7)a

(E) (7 1/4)a

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

]]>Any decimal that has only a finite number of nonzero digits is a terminating decimal. For example, 12, 0.13, and 4.068 are three terminating decimals. If j and k are positive integers and the ratio j/k is expressed as a decimal, is j/k a terminating decimal?

(1) k = 3

(2) j is an odd multiple of 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.

]]>If n^3 – n = (n – x)(n – y)(n – z),what is the value of x + y + z ?

(A) -3

(B) -1

(C) 0

(D) 3

(E) 9

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

]]>In the coordinate plane, points (x, 1) and (10, y) are on line k. If line k passes through the origin and has slope 1/2, then x + y =

(A) 4.5

(B) 7

(C) 8

(D) 11

(E) 12

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

]]>What is the value of t^3 - m^3 ?

(1) t^2 - m^2 = 18

(2) t - m = 2

(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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