Question

the ratio of the number of boys and girls in a school of 720 students is 7:5. how many girls should be admitted to the school to make the ratio 1:1 ?

Answer 1

$\huge{\underline{\bold{\blue{Solution:}}}}$

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Ratio of $\textbf{Boy}$ and $\textbf{Girl}$ = $\textbf{7 : 5}$

Total number of students = $\textbf{720}$

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Number of $\textbf{Girls}$ = $\frac{5}{120} \times 720 = 300$

Number of $\textbf{Boys}$ = $720 - 300 = 420$

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Now,

$\textbf{\underline{Number of girls needed}}$

= > $420 - 300 = 120$

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$\textbf{\underline{Therefore, 120 girls should be}}$ $\textbf{\underline{admitted to the school to make the}}$$\textbf{\underline{ratio 1:1.}}$

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$\bold{\fbox{Hope\:It\:Helps!!!}}$
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