Given
30 8th graders
9 dropped out before the first practice
Total = 30 - 9 = 21 8th graders
Procedure
46% of the club are 8th graders
T: Total of studetns
[tex]\begin{gathered} 21=T\cdot46\text{ 2/3 \%} \\ T=\frac{21}{0.46666} \\ T=45 \end{gathered}[/tex]The total students in the running club would be 45 students and 21 from 8th graders