If √(1 + x/64) = 9/8, then x = ?

  1. 15
  2. 16
  3. 17
  4. 18
Anurag Mishra Professor Asked on 18th April 2016 in Maths.
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  • 1 Answer(s)

    Answer: (3) 17

    Solution:-
    Ö(1 + X/64) = 9/8
    Square on both side,
    1 + X/64 = (9/8)2
    1 + X/64 = 81/64
    1 = 81/64 – X/64
    1 = (81 – X)/64
    By cross multiplication,
    64 = 81 – X
    X = 81 – 64
    X = 17

    Then, the value of X is 17.

    Hence, the correct answer is option (3) 17.

    Anurag Mishra Professor Answered on 23rd April 2016.
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