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      Question

      The ratio of two numbers is 10:12 and their LCM is 240.

      The numbers are:
      A 40,48 Correct Answer Incorrect Answer
      B 32,64 Correct Answer Incorrect Answer
      C 60,80 Correct Answer Incorrect Answer
      D 24,28 Correct Answer Incorrect Answer

      Solution

      Let two numbers be A and B. => A:B = 10x:12x LCM = 10 ├Ч┬а12 ├Ч┬аx = 60x => 60x = 240 => x = 4 A = 10x = 10 ├Ч┬а4 = 40 B = 12x = 12 ├Ч┬а4 = 48

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