Answer:
12.5%
Explanation:
The percent of increase can be calculated as:
[tex]\frac{v_f-v_i}{v_i}\times100[/tex]Where vf is the final value and vi is the initial value.
So, replacing vf by $1800 and vi by 1600, we get:
[tex]\frac{1800-1600}{1600}\times100=\frac{200}{1600}\times100=12.5\text{ \%}[/tex]Therefore, the percent of the increase is 12.5%