Question

Last spring, the drama department at Manchester High School had 12 students audition for the musical. This spring, there were 15 students trying out. What is the percent of increase in the number of students auditioning?
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Answer 1

Answer:

25%

Step-by-step explanation:

The percent of increase can be calculated using following formula:

$\text{Percent Increase}=\dfrac{\text{Final Amount-Initial Amount}}{\text{Initial Amount}}\cdot 100\%.$

In your case,

• Initial amount = 12 students;
• Final amount = 15 students,

then

$\text{Percent Increase}=\dfrac{15-12}{12}\cdot 100\%=\dfrac{3}{12}\cdot 100\%=\dfrac{1}{4}\cdot 100\%=25\%.$