The equation that determine the annual salary is:
[tex]\text{Annual salary = Biweekly paycheck }\cdot\text{ \# of paychecks}[/tex]So for the semimonthly will have the time reduce by the halvo so:
[tex]\begin{gathered} \text{Semimonthly salary = Annual salary / 2} \\ \text{Semimonthly salary = (Biweekly paycheck }\cdot\text{ \# of paychecks) / 2} \end{gathered}[/tex]