Millie wants to take swimming lessons. She can purchase two different swim lesson packages. Package A is 20 lessons for $230. Package B is 15 lessons for $180. If Millie wants the better buy, which package should she choose? Show your work and explain why your choice is the better buy.

To determine the better buy, we need to compare the price per lesson for each package.

Price per lesson for Package A: $230 / 20 lessons = $11.50/lesson
Price per lesson for Package B: $180 / 15 lessons = $12/lesson

Based on the calculations, Package A offers a better buy because the price per lesson is lower than Package B. Therefore, Millie should choose Package A.