Question 3
Anna is trying to save money to buy a favorite toy set. Every week, Anna puts 20 dollars into her piggy bank. Currently, Anna already has 150 dollars in the piggy bank. Anna's mother promises to give Anna an additional 15 dollars each week as encouragement. Anna's goal is to have a total of 500 dollars to buy the favorite item. How many weeks will it take for her to reach her goal?
