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The probability of selecting a boy in a class is0.6 and there are 45 students in a class, then find the number of girls in the class.

Respuesta :

x-boys

y-girls

[tex]\frac{6}{10}=\frac{x}{45}[/tex]

6*45=10x

270=10x

x=27

y=45-27=18

18 girls

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