There are 120 girls and 57 boys in a school. If 5% of the girls leave the school and no new candidates take up admission, what will be the total percentage of boys in the school?
+14915 There are 120 girls and 57 boys in a school. If 5% of the girls leave the school and no new candidates take up admission, what will be the total percentage of boys in the school?
Hello Guest!
\(120\times 5\%=\color{blue}6\)
5% of the students are 6 girls.
\(120+57-6=\color{blue}171\) \(⇒ 100\%\)
\(171:100\%=57:x\\ 171x=57\cdot 100\%\\ x=\frac{57\cdot 100\%}{171}\)
\(x=33\frac{1}{3}\%\)
The percentage of boys in the school is \(33\frac{1}{3}\%\).
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