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      Question

      2/5 of a number plus 3/10 of the same number is 70. Find

      the number.
      A 100 Correct Answer Incorrect Answer
      B 125 Correct Answer Incorrect Answer
      C 175 Correct Answer Incorrect Answer
      D 115 Correct Answer Incorrect Answer

      Solution

      (2/5)N + (3/10)N = 70 LCM of 5 and 10 is 10 2/5 = 4/10 So, (4/10)N + (3/10)N = (7/10)N (7/10)N = 70 N = 70 × (10/7) = 10 × 10 = 100 Answer: 100

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