Real-Life Math
The math motorcycle mechanics use on the job can be fairly complicated,
such as calibrating a specific part. Or it can be simple.
Dwight Osterhout
teaches motorcycle mechanics. "Basic math is necessary. We like to have [a]
Grade 12 math level. For those who need extra help, we have, as part of our
program, a small section that brings their skill level up in the areas where
we require it."
As a motorcycle mechanic, one thing that you're
responsible for is writing up work orders. You have to add up the parts that
are put on it.
A customer has brought you a bike that was given to
him. If he can get it fixed for a reasonable amount of money, he plans to
keep it. Before you begin working on it, you must give him an estimate.
After
a careful inspection of the bike, you decide that it needs a new headlight,
a generator cover, a center cowl, a fuel tank and a battery.
When
you present your customer with a price list, he presents you with a list from
Fred's, another motorcycle repair shop.
The two lists look like
this:
 | Your list | Fred's |
Headlight | $187.22 | $160.76 |
Center Cowl | $101.80 | $118.20 |
Battery | $76.18 | $84.90 |
Generator Cover | $47.40 | $40.96 |
Round each number in the lists to the nearest dollar amount, then
calculate the rounded totals. Which shop can offer cheaper parts? If the customer
decides to go with the cheaper prices, how much money would he save?