Preference

Question: After x years Sujan will be y years old. After z years Sujan will be--

  1. a.
    x + y + z
  2. b.
    x - y + z
  3. c.
    y - x + z
  4. d.
    x + z
Answer: c

Question: The average age of three persons is 30 years. If the ratio of three ages is 3 : 5 : 7. What is the age of the youngest person?

  1. a.
    18 years
  2. b.
    8 years
  3. c.
    16 years
  4. d.
    42 years
  5. e.
    None of these
Answer: a

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