Fraction of boys \(=\frac{5}{8}\)
Fraction of girls \(=1-\frac{5}{8}=\frac{3}{8}\)
Number of girl \(=240\)
Number of girls = Total students \(\times\frac{3}{8}\)
\(\Rightarrow\) 240 = Total students \(\times\frac{3}{8}\)
\(\Rightarrow\) Total students = 240 \(\div\) \(\frac{3}{8}\)
\(=240\times\frac{8}{3}\)
\(=\frac{240\times8}{3}\)
\(=\frac{1920}{3}=640\)
Total students \(=640\)
Number of boys = Total students - Number of girls
\(=640-240=400\)
Number of boys \(=\) 400
