Question 2
Alex, having only one 20-dollar bill, went to buy lunch. While giving him back change, the cashier got distracted and mixed up the dollars and cents—paying dollars instead of cents and cents instead of dollars. Alex put the change in his wallet without looking at it. After a while he decided to buy a slice of bread as an addition to his lunch. He paid 15 cents for it and then noticed that the amount he had with him now was double of what he should have had after paying for the lunch and the slice of bread (if the cashier had not made a mistake). How many dollars and how many cents is the correct change that Alex should have received after buying lunch? (Note: 1 dollar = 100 cents)
Paper instruction: Give a full solution.
Paper instruction: Give a full solution.