Question
Evaluate 3.2 × 2.5 + 1.5 × 1.2 and express the answer
as a fraction.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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