SOLUTION: A cellular telephone company has two plans. Plan A charges $11 a month and $0.12 per minute. Plan B charges $20 a month and $0.10 per minute. After how much time, to the nearest mi
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Question 156306: A cellular telephone company has two plans. Plan A charges $11 a month and $0.12 per minute. Plan B charges $20 a month and $0.10 per minute. After how much time, to the nearest minute, will the cost of Plan A be equal to the cost of Plan B? Please help, Thanks! Answer by nerdybill(7384) (Show Source):
You can put this solution on YOUR website! .
Let x = minutes of usage when both plans are equal in cost
.
Plan A costs (per month): 11+.12x
Plan B costs (per month): 20+.10x
.
11+.12x = 20+.10x
11+.02x = 20
.02x = 9
x = 9/.02
x = 450 minutes
