Gross Income

An employee is paid an annual salary of $\displaystyle \pounds 42600$.
Calculate the gross monthly pay.

A technician works $\displaystyle 37.5$ basic hours at $\displaystyle \pounds 16.40$ per hour.
She also works $\displaystyle 6$ hours of overtime, paid at time-and-a-half.
Calculate her gross pay for the week.

A sales adviser is paid a basic monthly salary of $\displaystyle \pounds 1900$.
She also earns $\displaystyle 4\%$ commission on monthly sales above $\displaystyle \pounds 25000$.
Her sales for the month were $\displaystyle \pounds 61000$.
Calculate her gross pay for the month.

Contract A pays $\displaystyle \pounds 420$ per week.
Contract B pays $\displaystyle \pounds 1850$ per month.
Assuming $\displaystyle 52$ weeks in a year, determine which contract pays more per year. Use your working to justify your answer.