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    Question

    The LCM of two numbers is 4 times of their HCF. The sum

    of LCM and HCF is 280. If one of the number is 224, then the other number is:
    A 70 Correct Answer Incorrect Answer
    B 40 Correct Answer Incorrect Answer
    C 56 Correct Answer Incorrect Answer
    D 64 Correct Answer Incorrect Answer

    Solution

    LCM = 4 HCF HCF＋4HCF = 280 5HCF = 280 HCF = 56 LCM = 4 × 56 = 224 Second number = (LCM × HCF)/First number => (224 × 56)/224 => 56

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