Preference

Question: If the sum of (3, 7 and x) is 18, then the average of (3, 7 and x) is--

  1. a.
    6
  2. b.
    7
  3. c.
    8
  4. d.
    9
  5. e.
    None of these
Answer: a

Question: If 3a +5b = 10 and 5a + 3b = 30, what is the average (arithmetic mean) of a and b?

  1. a.
    4
  2. b.
    2.5
  3. c.
    3.5
  4. d.
    4.5
  5. e.
    3
Answer: b

Question: The average of 6, 8 and 10 equals the average of 7, 9 and --

  1. a.
    8
  2. b.
    9
  3. c.
    11
  4. d.
    1
  5. e.
    7
Answer: a

Question: Sum of P and Q is 72 and the value of R is 42. What is the average of P, Q and R?

  1. a.
    32
  2. b.
    34
  3. c.
    36
  4. d.
    38
  5. e.
    30
Answer: d

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