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    Question

    What will come in place of a? 169

    1.7 x  13  2.5   x 169 1.5 = 13 a
    A 12 Correct Answer Incorrect Answer
    B 7 Correct Answer Incorrect Answer
    C 16 Correct Answer Incorrect Answer
    D 8.9 Correct Answer Incorrect Answer

    Solution

    169 1.7   13  2.5     169  1.5 = 13 a (132)1.7 (131) 2.5  (132)1.5 = 13 a (13)3.4   (13)2.5  133 = 13 a (13)3.4+2.5+3 = 13 a  a = 8.9

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