School

There are 500 students in a school. 60% of them are boys and the rest are girls. What is the percentage of girls? Also find the total number of boys and girl in the school.

Correct answer:

p₂ =  40 %
b =  300
g =  200

Step-by-step explanation:

$$\begin{gathered} n=500 \\ {p}_1=60\% \\ {p}_2=100-p_1=100-60=40\% \end{gathered}$$

$b=n\cdot \frac{p_1}{100}=500\cdot \frac{60}{100}=\frac{500\cdot 60}{100}=\frac{30000}{100}=300$

$g=n\cdot \frac{p_2}{100}=500\cdot \frac{40}{100}=\frac{500\cdot 40}{100}=\frac{20000}{100}=200$

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