Problema Solution

Customers of a phone company can choose between two service plans for long distance calls. The first plan has a

$

14

monthly fee and charges an additional

$

0.18

for each minute of calls. The second plan has a

$

22

monthly fee and charges an additional

$

0.14

for each minute of calls. For how many minutes of calls will the costs of the two plans be equal?

Answer provided by our tutors

let


x = the number of minutes for which the costs of the two plans will be equal:


14 + 0.18x = 22 + 0.14x


by solving we find:


x = 200 min


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for 200 minutes the cost of the two plans will be equal.