Answer:
$690
Step-by-step explanation:
To know how much money Joe earned, we need to split his 52 hours of work in three parts:
40 hours earning 11.5 per hour
8 hours earning 17.25 per hour (one time and a half of his regular payment)
The last 4 hours earning 23 per hours (double time earnings)
So, to know the total earning, we multiply each block of hours for its respective value per hour, and them sum them all:
Total earning = 40*11.5 + 8*17.25 + 4*23 = $690
