Answer:
Pio is paid with $ 401.25 for 51 hours in a week.
Explanation:
Based on the information of the statement we can calculate his payment for 51 hours in a week but using this arithmetical formula:


Please notice that first component of the sum represent the ordinary time in a week (46 hours) and the second one, extra work time.
Pio is paid with $ 401.25 for 51 hours in a week.