(3 1/2 - 9 3/4) ÷ (-2.5)
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The percent increase is 25 %
<em><u>Solution:</u></em>
Given that we have to find the percent incraese
From 24 teachers to 30
The percent increase between two values is the difference between a final value and an initial value, expressed as a percentage of the initial value.
<em><u>The percent increase is given as:</u></em>
Here, initial value = 24 and final value = 30
<em><u>Substituting the values in above formula, we get</u></em>
Thus percent increase is 25 %