Simon arrived at work at 815 AM and left work at 10 30 PM If Simon gets paid by the hour at a rate of 10 and time and for any hours worked over 8 in a day How much did Simon get paid?

This question is Worded incorrectly and uses incorrect vernacular at places. It is ambiguous as far as over which pay period the question is asking for. It's impossible to tell if the author wants to know the amount Simon was paid in a day (none, since he's more likely paid bi-weekly or monthly) or over his entire career. His bi-weekly pay check would be (assuming the author meant 1.5 times his normal rate for hours over 8 in a day) $1737.50 with:

8:15 - 4:15 = 8 hours ==> 8 hours * $10 an hour = $80.00 ==> $80.00 * 10 Days=

$800.00

and

4:15 - 10:30 = 6.25 hours ==> 6.25 hours * $15 an hour= $93.75 x 10 Days=

$937.50

Together they equal $1737.50. But as stated above, Simon doesn't get paid for one day of work on that day, which seems to be how the question is Worded.