It's slightly ambiguous because the year isn't an even number of weeks, so sometimes that extra day falls on a weekend and sometimes on a weekday. We'll assume a weekend; that makes the numbers come out nice.
Total working days, 52 five day weeks minus 30 days vacation
![d = 52 * 5 - 30 = 230](https://img.qammunity.org/2019/formulas/mathematics/high-school/h49h86vwj8hldi9wd7x3boor1wai7lk9m8.png)
So his daily rate is
dollars per day
Answer: A
It's closer to $518 when we count the extra day as a weekday.