Question

Customers of a phone company can choose between two service plans for long distance calls. The first plan has no monthly fee but charges $0.15 for each

minute of calls. The second plan has a $20 monthly fee and charges an additional $0.11 for each minute of calls. For how many minutes of calls will the costs of
the two plans be equal?

Answer 1

500 minutes

Explanation:

0.15 x = 20 + 0.11 x

0.15 x - 0.11 x = 20

0.04 x = 20

x = 20/0.04 = 2000 / 4 = 500