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The LCM of two numbers is 48. The numbers are in the ratio of 2 : 3. Find the sum of the numbers.

28
32
40
64

Correct Answer: 40

Explanation:

Let numbers are 2N and 3N.
According to the question, 6N = 48
⇒ N = 8 ( ∵ LCM = 6N )
∴ Required sum = ( 2N + 3N ) = 5N
= 5 x 8 = 40

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