Answer:
20% percentage of the cost you pay .
Step-by-step explanation:
Formula
[tex]Percentage = \frac{Part\ value\times 100}{Total\ value}[/tex]
As given
Your last doctor’s visit cost $105.
Health insurance through your employer paid $84, and you paid the remaining $21.
Part value = $21
Total value = $105
Put all the values in the formula
[tex]Percentage = \frac{21\times 100}{105}[/tex]
[tex]Percentage = \frac{2100}{105}[/tex]
Percentage = 20%
Therefore the 20% percentage of the cost you pay .