# The cost of a protein bar increased from $2.50 to$2.80. The percent increase in the $2.80 rate was how much? ##### 1 Answer Jun 23, 2016 The percent increase =12%. #### Explanation: The percent change (increase) involves finding the difference between the initial value and final value (cost). Initial cost =$2.50

Final cost = $2.80 Change in cost = $2.80 - 2.50 = 0.3$The percentage increase $=$(change in value)/initial value $\times 100$$= \frac{0.3}{2.50} \times 100\$

=12% increase in cost.