SOLUTION: Rick’s Automotive charges $50 plus $15 for each (15-min) unit of time when making a road call. Twin City Repair charges $70 plus $10 for each unit of time. Under what circumstance
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Question 518938: Rick’s Automotive charges $50 plus $15 for each (15-min) unit of time when making a road call. Twin City Repair charges $70 plus $10 for each unit of time. Under what circumstances would it be more economical for a motorist to call Rick’s?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
50+15x=70+10x
5x=20
x=4
4 units is one hour. They are equal for an hour.
For less than an hour, Rick's is less cost than Twin city.
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