SOLUTION: ABC phone company charges $24 per month plus 3 cents per minute of phone calls. XYZ phone company charges $12 per month plus 5 cents per minute of phone calls. how many minutes of

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Question 692956: ABC phone company charges $24 per month plus 3 cents per minute of phone calls. XYZ phone company charges $12 per month plus 5 cents per minute of phone calls. how many minutes of phones calls should be made each month to make XYZ phone company a better deal?
A. <600 min
B. >60 min
C. >600 min
D. <60 min
Answer by fcabanski(1391) About Me  (Show Source):
You can put this solution on YOUR website!
You can plug in answer choices to see which is best. That would take some time. Or you can set up an equation. For ABC the fee is 24 + .03x where x is the number of minutes. For XYZ it's 12+.05x where x is the number of minutes.


XYZ is a better deal when it's cheaper, or less than, ABC. So solve for x in 12+.05x < 24+.03x (Subtract 12 from both sides and subtract ,03x from both sides.)


.02x < 12 (divide both sides by .02) ---> x < 600

Hope the solution helped. Sometimes you need more than a solution. Contact fcabanski@hotmail.com for online, private tutoring, or personalized problem solving (quick for groups of problems.)