GMAT
math.30

# Q9 is the measure of one of the interior angles of

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Q9: Is the measure of one of the interior angles of quadrilateral ABCD equal to 60 degrees? (1) Two of the interior angles of ABCD are right angles. (2) The degree measure of angle ABC is twice the degree measure of angle BCD. 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. Answer: ---------------------------------------------------------------------------------------------------------------------- Q10: \$10,000 is deposited in a certain account that pays r percent annual interest compounded annually, the amount D(t), in dollars, that the deposit will grow to in t years is given by D(t) = 10,000 {1+ (r/100)} t . What amount will the deposit grow to in 3 years? (1) D(t) = 11,000 (2) r =10

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---------------------------------------------------------------------------------------------------------------------- Q11: If a and b are integers, is b even? (1) 3a + 4b is even. (2) 3a + 5b is even. ---------------------------------------------------------------------------------------------------------------------- Q12: Working alone at its constant rate, machine K took 3 hours to produce 4 1 of the units produced last Friday. Then machine M started working and the two machines, working simultaneously at their respective constant rates, took 6 hours to produce the rest of the units produced last Friday. How many hours would it have taken machine M , working alone at its constant rate, to produce all of the units produced last Friday? ------------------------------------------------------------------------------------------------------------ Q13: If x + y is an integer, is y an integer? (1) x y is an integer. (2) x + 2 y is an integer. 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. Answer: ------------------------------------------------------------------------------------------------------------

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• Spring '12
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