o.k i have 2 kids in care non school age

104.5% for both children
one child is in for 24 hours a week another for 16 hrs. The child care charges hourly $5.60 and 30 cents out of that figure an hour goes to the daycare scheme.

my day care lady worked this out for me
24 hours x $5.60 = $134.40
CCB 104.5% = $120.38
weekly parenting fee $14.02

16 hours x $5.60 = 89.60
CCB 104.5% = $80.25
Weekly parenting fee = $9.35

today she says to me that if i put them in for a few more hours weekly my cost per week could drop down is this true? Im confused im allowed 50 hours a week and how did they come up with those figures?