SOLUTION: Car Hire company A costs $125 per day. Car Hire company B costs $320 plus .50 cents per km. Car is needed for 4 days - unsure of kms to travel. 1. what distance in kms do I n

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Question 329573: Car Hire company A costs $125 per day. Car Hire company B costs $320 plus .50 cents per km. Car is needed for 4 days - unsure of kms to travel.
1. what distance in kms do I need to cover to make Company B's charge cheaper. Define this in a mathematical equation.
2. How to show in an excel graph.
Thank you.

Answer by mananth(16946)   (Show Source): You can put this solution on YOUR website!
Company A $125 / day = *4 = $500
Company B = $320 +0.5x where x is the number of miles driven in 4 days
..
0.5x+320<500
0.5x<500-320
0.5x<180
x<180/0.5
x<360
Company B is a better deal for less than 360 miles.
..

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