Sam had some money. He spent $4.50 on chocolate bar and $3.00 on cold coffee. He has two-fifth of his money left. How much money did Sam have to start with?
4.5 + 3 = 7.5
= 1 - 2/5
= 5/5 - 2/5
= 3/5
7.5/3/5 = (5(7.5))/3 = $12.50
= 1 - 2/5
= 5/5 - 2/5
= 3/5
7.5/3/5 = (5(7.5))/3 = $12.50