Answer: $8.88
Assuming its 8:00am to 4:15pm and took a 1 hour break then he worked for a total of 7 hours and 15 minutes. In decimals that would be 7.25 hours. We want to find how much he makes in 1 hour. So, because we want to find 1 hour we divide the hours by 7.25 and the money by 7.25.
64.38 / 7.25 = 8.88.
There for, he makes $8.88.