SOLUTION: a car insurance company charges insurance premium in proportion to the car's value. for a $12,000 car, the monthly premium is $55. huynh pays a $90 monthly premium for his car. to

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: a car insurance company charges insurance premium in proportion to the car's value. for a $12,000 car, the monthly premium is $55. huynh pays a $90 monthly premium for his car. to       Log On


   



Question 1200661: a car insurance company charges insurance premium in proportion to the car's value. for a $12,000 car, the monthly premium is $55. huynh pays a $90 monthly premium for his car. to the nearest dollar, how much is his car valued at?
Answer by ikleyn(52847) About Me  (Show Source):
You can put this solution on YOUR website!
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a car insurance company charges insurance premium in proportion to the car's value.
For a $12,000 car, the monthly premium is $55.
huynh pays a $90 monthly premium for his car.
to the nearest dollar, how much is his car valued at?
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Obviosly, this problem is "on proportions".


Write a proportion as you read the problem

    premium%2Fcar_value = 55%2F12000 = 90%2Fx,


where x is the unknown car's value.


From this proportion, find x

    x = %2812000%2A90%29%2F55 = 19636.36, or 19636 dollars, rounded to the closest dollar.   ANSWER

Solved, with complete explanations.

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For introductory lessons on proportions,  see the lessons
    - Proportions
    - Using proportions to solve word problems
    - Typical problems on proportions
    - Using proportions to estimate the number of fish in a lake
    - HOW TO algebraize and solve these problems using proportions
in this site.

Learn the entire subject from there.


Happy learning  ( ! )