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There are 250 boys and 150 girls in a school, if 60% of the boys...

Mathematics
WAEC 2018

There are 250 boys and 150 girls in a school, if 60% of the boys and 40% of the girls play football, what percentage of the school play football?

  • A. 40.0%
  • B. 42.2%
  • C. 50.0%
  • D. 52.5%
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Correct Answer: Option D
Explanation

Population of school = 250 + 150 = 400

60% of 250 = \(\frac{\text{60%}}{\text{100%}}\) x 250 = 150

40% of 150 = \(\frac{\text{40%}}{\text{100%}}\) x 150 = 60

Total number of students who plays football;

150 + 60 = 210

Percentage of school that play football;

\(\frac{210}{400}\) x 100% = 52.5%


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