Question

9 out of 25 students are home sick with the flu. what percentage of the students are home sick?

Explanation:

Step1: Use the percentage formula

The formula for percentage is $\frac{\text{part}}{\text{whole}}\times100\%$. Here, the part is the number of students home - sick ($9$) and the whole is the total number of students ($25$). So we have the expression $\frac{9}{25}\times100\%$.

Step2: Simplify the fraction

Since $\frac{9}{25}=\frac{9\times4}{25\times4}=\frac{36}{100}$ (by multiplying numerator and denominator by $4$). Then $\frac{36}{100}\times100\% = 36\%$.

Answer:

$36\%$