Practice Test Discussion

Q)

LCM of two numbers is 120 and their HCF is 10. Which of the following can be the sum of those two numbers?

[NICL (GIC) AD (Finance), 2013]

    • Explanation

    Here, LCM of two numbers=120

    HCF of these two numbers=10

    Let the two numbers be 10x and 10y.

    Then, LCM of 10x and 10y=120

    =10xy =120

    = xy =12

    Here, xy can be (3,4)

    So, numbers are 10×3 and 10×4.

    Sum of these two numbers =30+40=70

    Hence, Option D is correct.

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