Question

A phone company offers two monthly plans. Plan A costs $40 plus an additional $0.05 for each minute of calls. Plan B has no initial fee but costs $0.25 for each minute of calls. What is the cost when the two plans cost the same for a set number of minutes?

Answer 1

Answer:

20 minutes

Step-by-step explanation:

Plan A

C = 40 + 0.05m

Plan B

C = 0.25m

we want to find the number of minutes m such that the two plan cost the same.

Hence

40 + 0.05m = 0.25m

40 = 0.20 m

m = 40/ 0.20

m = 400 / 2

m = 20 minutes.