Joanna gets ￡$$5.00$$ pocket money each week and her younger sister, Amy, gets ￡$$3.50$$ each week. After $$5$$ weeks, Joanna saved all her money, but Amy spent $$75$$p a week on stickers. How much more does Joanna now have compared to Amy? 
Overseas Competition->Knowledge Point->Calculation Modules->Decimals->Addition and Subtraction of Decimals->Subtraction of Decimals