Respuesta :
Answer:
Ella's Grade: 15
Minh's Grade: 16
Step-by-step explanation:
If each grade has 20 girls in the grade, then that implies effectively that the ratios would apply via fractions, which are 3:4 and 4:5. As such, take both Fractions and increase them both to 20: 15:20 and 16:20.
The number of boys in Ella's grade is 15 and Minh's grade is 16
Given that,
The ratio of boys to girls in Ella's grade is 3:4
And the ratio of boys to girls in Minh's grade is 4:5
The total number of girls is 20
Computation:
Let the number of boys be [tex]x[/tex]
So in the case of Ella's,
[tex]\frac{3}{4}=\frac{x}{20}\\x=\frac{20\times3}{4}\\x=15[/tex]
And in case of Minh's,
[tex]\frac{4}{5}=\frac{x}{20}\\x=\frac{20\times4}{5}\\x=16[/tex]
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