Big Book Test 2 Sec 2 Q9-11

GRE Quant Problem Solving
1

Hey all! I’m having a hard time with the Big Book Test 2 Section 2 Questions 9, 10, 11

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I know answers are:
9. D
10. A
11. C

2

  1. If x and y are positive the answer would be B, if they are zero answer would be C, if they are negative answer would be A, so it’s D.

  2. In parallelograms diagonally opposite angles are equal, so:
    3x = 4y
    x/y = 4/3
    x > y
    Answer (A)

  3. Using the sum of arithmetic series formula:
    A = (41/2)(19+59) = (41 x 78)/2 = 1599
    B = (39/2)(22+60) = (39 x 82)/2 = 1599
    A = B
    Answer (c)

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