Convert 30% into a decimal. Divide the percentage by 100:
[tex]30 / 100 = 0.3[/tex]
The problem can be solved with the following equation:
[tex]0.3(40) = difference[/tex]
Multiply 0.3 by 40.
[tex]0.3 * 40 = 12[/tex]
12 more people adopted a manatee this year.
