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The total number of students who opted for Mathematics in the years 2005 and 2008 together is approximately what percent of the total number of students who opted for all three subjects in the same year?
Total number of students who opted for mathematics in 2005 = 15000
Total number of students who opted for mathematics in 2008 = 30000
Total number of students who opted for all the three subjects in 2005 = 55000
Total number of students who opted for all the three subjects in 2008 = 85000
Percentage = $$\frac{45000}{140000}$$ x 100 = 32.14 ≈ 32
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