Answer:
A. 20%
Explanation:
Last Doctors visit cost $105.
Health insurance through employer paid $84 and you paid $21.
% of cost paid by you will be the amount paid by you divided by the total cost of the doctors visit multiplied by 100%.
That is $21/$105 x 100%
0.2 x 100%
20%
Therefore 20% of the cost of last doctors visit was paid by you .