SOLUTION: Customers of a phone company can choose between two service plans for long distance calls. The first plan has an $18 monthly fee and charges an additional $0.14 for each mi

Question 1103658: Customers of a phone company can choose between two service plans for long distance calls. The first plan has an
$18
monthly fee and charges an additional
$0.14
for each minute of calls. The second plan has a
$10
monthly fee and charges an additional
$0.18
for each minute of calls. For how many minutes of calls will the costs of the two plans be equal?

Answer by ikleyn(52800) (Show Source): You can put this solution on YOUR website!
.

First  plan:  18 + 0.14*m dollars, where m is the number of minutes.


Second plan:  10 + 0.18*m dollars, where m is the number of minutes.


For how many minutes of calls will the costs of the two plans be equal ?


              18 + 0.14*m = 10 + 0.18*m  ====>


              18 - 10 = 0.18m - 0.14m    ====>  8 = 0.04*m  ====>  m =  =  = 200 minutes.

Solved.

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