Answer: choice B 25%
Step-by-step explanation:
First: work out the difference (increase) between the two numbers you are comparing.
Increase = New Number - Original Number
Then: divide the increase by the original number and multiply the answer by 100.
% increase = Increase ÷ Original Number × 100.
Mark had 32 dvds now he has 40
so
[tex]\frac{40-32}{32}=0.25[/tex]
so the percentage change is 25%
