We are given that 6 out of 20 students at a school assembly were first-grade students.
What percentage of students at the assembly were first-grades students?
To find the percentage of students, divide 6 by 20 and then multiply the result by 100.
[tex]\begin{gathered} =\frac{6}{20}\times100\% \\ =0.3\times100\% \\ =30\% \end{gathered}[/tex]Therefore, 30% of students at the assembly were first-grade students.
