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    Question

    Two numbers are in the ratio of 2 : 5. Their LCM is 80.

    Find the numbers.
    A 18, 38 Correct Answer Incorrect Answer
    B 14, 36 Correct Answer Incorrect Answer
    C 16, 40 Correct Answer Incorrect Answer
    D 16, 38 Correct Answer Incorrect Answer

    Solution

    Let the number be 2x and 5x. HCF of the numbers = x 80 ├Ч x = 2x ├Ч 5x ┬а 5 = x Hence the two numbers are 2 x 8 and 5 x 8 = 16, 40 The required numbers are 16 and 40

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