Question

from january 2015 algebra 1 regents
1.solve yourself
26 the school newspaper surveyed the student body for an article about club membership. the table below shows the number of students in each grade level who belong to one or more clubs.
if there are 180 students in ninth grade, what percentage of the ninth grade students belong to more than one club?

Explanation:

Step1: Calculate the number of ninth - grade students in more than one club

The number of ninth - grade students in 2 clubs is 33 and in 3 or more clubs is 12.
So the total number of ninth - grade students in more than one club is \(33 + 12=45\).

Step2: Calculate the percentage

The formula for percentage is \(\text{Percentage}=\frac{\text{Part}}{\text{Whole}}\times100\%\).
Here, the part is 45 (students in more than one club) and the whole is 180 (total ninth - grade students).
So \(\text{Percentage}=\frac{45}{180}\times100\%\).
Simplify \(\frac{45}{180}=\frac{1}{4}\).
Then \(\frac{1}{4}\times100\% = 25\%\).

Answer:

\(25\%\)