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  1. The ratio of two numbers is 3 : 4 and their HCF is 15. Then the sum of the two numbers is :
    1. 105
    2. 115
    3. 120
    4. 110
Correct Option: A

Let the numbers be 3x and 4x.
Their HCF = x = 15
∴  Sum of numbers = 3x + 4x = 7x = 15 × 7 = 105


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