Randy has some money in his piggy bank. He spends 2 dollars every time he goes to the store. He makes 4 trips to the store every month. If he had $104 dollars left in his piggy bank after a year, how much money, in dollars, did he have at first?
Randy spends 2*4=8 dollars every month.
Randy spends 8*12=96 dollars in a year.
Randy had 96+104=200 dollars in his piggy bank at first.