2 families, let's call them family A and family B.
Family A - requires all day care (probably 7- 5) they have one child (2 years old)
Family B - requires care from 8 - 5 and have 2 children (1 year old and 4 year old) however, the the 4 year old will be at school during school hours (let's say 9-3ish)
How much should each pay?