Answer=$33,000
Assuming you are looking for the annual salary...
A base salary is the fixed amount of money paid the the employer, not counting bonuses or benefits.
Along with earning a base salary, this personals earned an extra $500 per month. There are 12 months in a year.
The following equation can be written:
T=$27,000+12*$500
T=$27,000+6,000
T=$33,000
