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The class size increased 25% to 40 students. What was the originial class size?

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We need to find 25% of 40, then subtract that number from 40 to find your answer, because the class increased by 25%.


Okay, let's find 25% of 40.


To do that, we need to multitasking the decimal form of 25% (0.25) by 40.


0.25*40=10



Okay, so now we know the class increased by 10 kids. Let's subtract those kids from the new class to find the original class number.


40-10=30


So, the original class size was 30 students.


Answer= 30 students

User Jlunavtgrad
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