SOLUTION: Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $28 one-time activation fee and charges .8 cents a minute. The secon
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Question 121580: Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $28 one-time activation fee and charges .8 cents a minute. The second plan has no activation fee and charges .12 cents a minute. After how many minutes of long distance calls will the costs of the two plans be equal? Answer by checkley71(8403) (Show Source):
You can put this solution on YOUR website! I'LL ASSUME THE .8 CENTS SHOULD BE .08 TO MAKE THIS FEE LESS THAN THE .12.
28+.08X=.12X
.12X-.08X=28
.04X=28
X=28/.04
X=700 MINUTES.
PROOF:
28+.08*700=.12*700
28+56=84
84=84
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