Case 1:
If you are an employee making $65000 a year, then you would pay
[tex]65000\times\frac{4.2}{100}=2730[/tex]$2730 toward social security.
Case 2:
If you are an employer with an employee who makes $65000, then you would pay
[tex]65000\times\frac{6.2}{100}=4030[/tex]$4030 towards social security for that employee.