Customers of a phone company can choose between two service plans for long distance calls. The first plan has an $8 monthly fee and charges an additional $0.14 for each minute of calls. The second plan has a $27 monthly fee and charges an additional $0.09 for each minute of calls. For how many minutes of calls will the costs of the two plans be equal?

Question

ranga · Answer

Assume t to be the number of minutes of call.

How much will the first plan cost for t minutes of call?

How much will the second plan cost for t minutes of call?

Equate the two and solve for t.