Lizzy: On Sunday Alice bought 4 pints of strawberry ice cream. The next day she went back and bought three times that number of pints. On Tuesday she bought one-third of the number of pints she bought the day before. On Wednesday she returned half of the pints she bought the day before because they were expired. How many pints of ice cream did she have on Wednesday?.
Me: Hmmm, let me think. I think this is the detailed solution:
User
On Monday she bought 4 * 3 = 12 pints. On Tuesday she bought 12 / 3 = 4 pints. Before she returned any she had 4 + 12 + 4 = 20 pints. She returned 4 / 2 = 2 pints. After returning she had 20 - 2 = 18 pints. Final answer: 18.
Assistant