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There are 250 boys and 150 girls in a school. If 60% of the ...
waec-2018 ssce-exam-2018 waec-mathematics-2018 math
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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 plays football? 

A:  40% 

B:  42.2% 

C:  50.0% 

D:  52.5%

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peter
Asked by peterrep:1.7K
University of Lagos Nigeria
02 September 2020

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judziy
Judziy answeredrep:1.9K
University of Benin Nigeria
17 September 2020
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Number of boys (nb) = 250

Number of girls (ng) = 150

Total number of boys and girls (T1) = nb + ng = 250 + 150 = 400

Percentage of boys that palys football = 60%

Number of boys that plays football (nbf) = 60% * nb = 60/100 * 250 = 150

Percentage of girls that plays football = 40%

Number of girls that plays football (ngf) = 40% * ng = 40/100 * 150 = 60

Total number of boys and girls that plays football (T2) = nbf + ngf = 150 + 60 = 210

Thus, the percentage of girls and boys that plays football = T1/T2 * 100

= 210/400 * 100

= 52.5%

Answer: D

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