Question

    Three numbers are in the ratio 3:5:7 respectively. If the

    HCF of the numbers is 4, then find the LCM of the numbers.
    A 280 Correct Answer Incorrect Answer
    B 420 Correct Answer Incorrect Answer
    C 360 Correct Answer Incorrect Answer
    D 240 Correct Answer Incorrect Answer

    Solution

    Numbers:
    3 × 4 = 12
    5 × 4 = 20
    7 × 4 = 28
    LCM of 12, 20, and 28 = 420

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