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Sagot :
Given:
The principal approved the event for 200 students.
The number of juniors should be 25% of the number of seniors.
To find:
The number of juniors.
Explanation:
Let x be the number of seniors.
According to the problem,
[tex]x+25\%\text{ of }x=200[/tex]Solve for x we get,
[tex]\begin{gathered} x+\frac{25}{100}x=200 \\ x+\frac{1}{4}x=200 \\ \frac{5x}{4}=200 \\ 5x=800 \\ x=\frac{800}{5} \\ x=160 \end{gathered}[/tex]So, the number of seniors is 160.
Therefore, the number of juniors must be,
[tex]200-160=40[/tex]Final answer:
The number of juniors is 40.
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