algebra problem

Question

The percentage method of withholding federal income tax(2010) states that a single person whose weekly wage, after subtracting withholding allowances, are over $693, but not over $1302, shall have $82.35 plus 25% of the excess $693 withheld. Over what range does the amount withheld vary if the weekly wages vary from $600 to $700 exclusively.

Answer 1

For $600, $83.25

For $700, $83.25 + (0;25)($700 - $693)