Answer :
SOLUTION
The total number of student in the class is 40
The fraction of boys in the class is
[tex]\frac{2}{5}[/tex]Let the number of the Boys in the classroom be Y
Hence Y
[tex]\begin{gathered} Y=\frac{2}{5}\times40 \\ Y=2\times8=16 \end{gathered}[/tex]Therefore the number of the Boys in the classroom is 16