Answer:
Percentage Increase = 60%
Explanation:
To find the percentage increase, we will use the formula below;
Percentage Increase =
× 100%
From the question given, the initial cost = $ 135
Now, we need to find the increase;
Increase = $216 - $135 = $81
We can now proceed to insert the values and then simplify;
Percentage Increase =
× 100%
=
× 100%
=
%
=60%
Percentage Increase = 60%