between 7:15 and 10:15 is 3 hours difference. times 13.17 by 3 to get 39.51
at lunch, the difference between 1:30 and 7:45 is 6 hours and 15 minutes
times 13.17 by 6 to get 79.02
to find 15 minutes pay, divide the hourly rate by 4 to get 3.2925
then add it back on to 79.02
= $82.3125
round to 2 d.p
=$82.31 is the after lunch salary.
