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%
Correct Answer: D. 52.5%
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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