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in a class of 20 students, 40% of them have a pet how many students have a pet

Sagot :

20 students represent 100% of the class, to find how many students are 40% of the class, we can use the next proportion:

[tex]\frac{20\text{ students}}{x\text{ students}}=\frac{100\text{ \%}}{40\text{ \%}}[/tex]

Solving for x,

[tex]\begin{gathered} 20\cdot40=100\cdot x \\ \frac{800}{100}=x \\ 8=x \end{gathered}[/tex]

8 students have a pet