A swim teacher sells lesson packages. The best deal has the highest ratio of lessons to total cost.Swim Lesson PackagesNumber of LessonsTotal Cost1$105$4010$8015$80Which package is the best deal?

Compare lessons per dollar for each package: 1 ÷ 10 = 0.1, 5 ÷ 40 = 0.125, 10 ÷ 80 = 0.125, and 15 ÷ 80 = 0.1875. The 15-lesson package gives the most lessons for each dollar, so it is the best deal: 15 lessons for $80.

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