Determine the total number of students.
[tex]\begin{gathered} T=10+15+15+20 \\ =60 \end{gathered}[/tex]
The number of students who are boys and have brown eyes are 10.
Determine the probability for next student is a boy with brown eyes.
[tex]\begin{gathered} P=\frac{10}{60} \\ =\frac{1}{6} \end{gathered}[/tex]
Answer: 1/6
