Working mothers who earn $30,000 or less per year receive a rebate on before and after school care of 75%, plus a school bonus of $6,000 that only applies to this category of earnings. Each dollar
earned above this amount and up to $40,000 reduces the rebate to 55%, and for any amount above
this, the rebate drops to 30%. There are three mothers – Jade earns $40,001, Emily earns $38,000
and Lucy earns $29,550. If the cost of before and after school care is $10,000 per year, what amount
of money does the person have who has the least amount of money left after paying for before and
after school care?