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    Question

    John had to multiply 'a' by 'b'. He however multiplied

    'a' by 22.5 and obtained 423 as the product. Selina also had to multiply 'a' by 'b'. She however multiplied 'b' by 22.5 and obtained 558 as the product. What is the value of "ab"?
    A 468.24 Correct Answer Incorrect Answer
    B 467.64 Correct Answer Incorrect Answer
    C 466.44 Correct Answer Incorrect Answer
    D 466.24 Correct Answer Incorrect Answer

    Solution

    According to question, => a x 22.5 = 423 => a = 423/22.5 ------ (i) Now, => b x 22.5 = 558 => b = 558/22.5 ------ (ii) Value of ab = (423/22.5) x (558/22.5) = 466.24

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