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    Question

    The HCF of two numbers is 112, and their LCM is 3360.

    What is the sum of the numbers?
    A 1232 Correct Answer Incorrect Answer
    B 1300 Correct Answer Incorrect Answer
    C 1280 Correct Answer Incorrect Answer
    D 1250 Correct Answer Incorrect Answer

    Solution

    Let the two numbers be 112x and 112y.
    Then,
    Product of the numbers = Product of HCF and LCM
    112x × 112y = 112 × 3360
    xy = 30
    Let x = 5 and y = 6 (As co-prime factors of 30 are 5 and 6).
    Then, the sum of the numbers is
    112 × 5 + 112 × 6 = 112 × 11 = 1232

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