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      Question

      Evaluate 3.2 × 2.5 + 1.5 × 1.2 and express the answer

      as a fraction.
      A 49/5 Correct Answer Incorrect Answer
      B 33/7 Correct Answer Incorrect Answer
      C 23/9 Correct Answer Incorrect Answer
      D 47/2 Correct Answer Incorrect Answer

      Solution

      Convert to fractions: 3.2 = 32/10 = 16/5 2.5 = 25/10 = 5/2 1.5 = 15/10 = 3/2 1.2 = 12/10 = 6/5 Now, 3.2 × 2.5 = (16/5) × (5/2) = 16/2 = 8 1.5 × 1.2 = (3/2) × (6/5) = 18/10 = 9/5 Total = 8 + 9/5 = (8 × 5)/5 + 9/5 = 40/5 + 9/5 = 49/5

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