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    Question

    If 21 @ 7 = 18 and 43 @ 22 = 68, then 48 @ 49 = '?'.

    A 160 Correct Answer Incorrect Answer
    B 162 Correct Answer Incorrect Answer
    C 164 Correct Answer Incorrect Answer
    D 158 Correct Answer Incorrect Answer

    Solution

    {(2 x 1) + 7} x 2 = {2 + 7} x 2 = 9 x 2 = 18 {(4 x 3) + 22} x 2 = {12 + 22} x 2 = 34 x 2 = 68 {(4 x 8) + 49} x 2 = {32 + 49} x 2 = 81 x 2 = 162

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