Question

Millie wants to take swimming lessons.%C2%A0 She can purchase two different swim lesson packages.%C2%A0 Package A is 20 lessons for $250.%C2%A0 Package B is 15 lessons for $180.%C2%A0 If Millie wants the better buy, which package should she choose?%C2%A0%C2%A0(6.RP.3.d)%C2%A0(1 point)