Level 2
Steven had 1 two-dollar note, 3 fifty-cent coins and 7 twenty-cent coins left after buying a toy car for $3.50. How much money did he had at first?
Level 3
Dennis saved some money on the first week. Each following week, he managed to save $8 more than the week before. He saved a total of $100 after 4 weeks. How much money did he save on the 3rd week?