PRB
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Solve:
[tex] \implies \sf \large percentage = rate \times base[/tex]
[tex] \implies \sf \large percentage = 30\%\times 50[/tex]
[tex] \implies \sf \large percentage = 0.3 \times 50[/tex]
[tex] \implies \sf \large percentage = 15[/tex]
[tex] \large \therefore \: \sf15 \: students \: were \: absent[/tex]
[tex] \: [/tex]
Now we can identify how many students were present.
[tex] \large \begin{align} \sf50 \\ \underline{ \sf - \: \: 15} \\ \sf \orange{35} \end{align}[/tex]
Final Answer:
[tex] \sf \large \orange{35 \: students \: were \:present}[/tex]
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