Respuesta :
Answer:
Percentage of boy students is 45 per cent.
The total number of students is 480.
Step-by-step explanation:
To find the percentage of boy students, just subtract 55% (the percentage of girl students) from 100%, then you'll get 45%.
To find the total number of students, just use algebraic equation, rearrange it, and solve for x.
The workings are shown in the picture attached. Hope this helps!

Answer:
total of students is 480
Step-by-step explanation
let t = total of students.
if 55% of the students in school are girls.
then 45% of the students in the school are boys.
if there are 216 boys in school.
[tex]45\% \times t = 216 \\ t = \frac{216}{45\%} \\ t = \frac{216}{ \frac{45}{100} } \\ t = \frac{216 \times 100}{45} \\ t = 480[/tex]