Frank goes to the store to buy some food. He buys 5 chocolate bars and 2 bags of chips. He hands the cashier $20 and gets $4 back as change. If the chocolate bars each cost $2, how much did each bag of chips cost?
His entire purchase cost $20 - $4 = $<T>subtract(20, 4)=16
The chocolate bars cost 5 * $2 = $<T>multiply(5, 2)=10
The bags of chips cost a total of $16 - $10 = $<T>subtract(16, 10)=6
Each bag of chips cost $6 / 2 = $<T>divide(6, 2)=3.0
