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8th Class Mathematics Rational Numbers Question Bank Numbers

  • question_answer
    The HCF of two numbers is 9 and their LCM is 270. It the sum of the numbers is 99, their difference is equal to

    A) 18                               

    B) 15

    C) 12                               

    D) 9

    Correct Answer: D

    Solution :

    Let the numbers be x and\[99-x.\] So, \[x\times (99-x)=9\times 270\] On solving the above equation, we get x = 54, 45 So difference will be 54 - 45 = 9.


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