Given:
Weekly deduction = $13.50
Employer is paying 80% of the cost of this insurance
To find:
Total annual premium of Janet's insurance
Solution:
If 80% of the 13.50 is remitted weekly then the weekly deduction will be,

Then the amount remitted in a year will be as follows,

(One year = 52 weeks)
Therefore, a total amount of $561.6 will be the the total annual premium for Janet's health insurance.