Question

A cell phone service provider offers two plans. Plan A includes a fee of $25 per month and charges $0.25 for every call. Plan B includes a fee of $40 per month and offers unlimited calls. For what number of phone calls is the cost of plan B less than the cost of plan A?
more than 60 calls
more than 160 calls
more than 120 calls
more than 100 calls

Answer 1

Plan A at 60 calls : 60*.25 + 25 = 15 + 25 = 40

Plan A is equal plan B at 60 calls
So if more than 60 calls the plan B will cost less than plan A

Answer: more than 60 calls