Question

There are $120$ girls and $57$ boys in a school. If $5\%$ of the girls leave and no new public are admitted. What percentage of the whole school will be boys?

• A. $20.00\%$
• B. $27.12\%$
• C. $33.33\%$
• D. $38.23\%$

Answer 1

Answer: (C)

$33.33\%$

Number of girls $\left(A\right)=120$

Number of boys $\left(B\right)=57$

Number of girls leaving the school $\left(C\right)=5\%$ of $120$ $=6$

Final Number of Girls after $\left(D\right)=120-6=114$

total number of students students $\left(T\right)=B+D=114+57=171$

Percentage of boys $=\frac{B}{T}\times 100=\frac{57}{171}\times 100=33.33\%$

The percentage of boys in school is $33.33\%$