Friday, August 21, 2009

Car Rental Quandary


I need to rent a car for my upcoming trip. Rent-A-Gem charges $20.25 per day plus 14 cents per mile. Super Saver Rentals charges $18.25 per day plus 22 cents per mile. At first glance it looks as if I should go with Super Saver Rentals. Still, I'm concerned about the per-mile charge because I plan to do a lot of driving during all three days of my trip.
  • Which company should I use?
  • How many miles would I have to drive to make the cost of renting a car from Rent-A-Gem the same as the cost of renting a car from Super Saver Rentals?
Be sure that you give all the details of your solution, including comparing all three tools that can be used to determine the correct answer.


This took a bit for you to get started on, but you did a beautiful job. Make sure to keep in mind that you have three tools that will come in handy for many of these problems. Many of you choose to make a table here, but struggled with what the headings were and what kind of a scale to use. Excel seemed to help with some of those concerns.

Solution:
Super Saver Rentals is cheaper if I'm only driving a few miles, but Rent-A-Gem is cheaper if I'm going to be driving a lot of miles, at 75 miles the two costs are equal for both companies. I have included the tables that you sent to illustrate your points.  They are listed below.


Ms. L.