Question 1200661
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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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<pre>
Obviosly, this problem is "on proportions".


Write a proportion as you read the problem

    {{{premium/car_value}}} = {{{55/12000}}} = {{{90/x}}},


where x is the unknown car's value.


From this proportion, find x

    x = {{{(12000*90)/55}}} = 19636.36, or 19636 dollars, rounded to the closest dollar.   <U>ANSWER</U>
</pre>

Solved, with complete explanations.


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For introductory lessons on proportions, &nbsp;see the lessons

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/proportions/lessons/-Proprtions.lesson>Proportions</A>

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/proportions/lessons/Using-proportions-to-solve-word-problems.lesson>Using proportions to solve word problems</A> 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/proportions/lessons/Typical-problems-on-proportions.lesson>Typical problems on proportions</A> 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/proportions/lessons/Using-proportions-to-estimate-the-number-of-fish-in-a-lake.lesson>Using proportions to estimate the number of fish in a lake</A>

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/proportions/lessons/HOW-TO-algebreze-and-solve-this-problem-using-proportions.lesson>HOW TO algebraize and solve these problems using proportions</A> 

in this site.


Learn the entire subject from there.



Happy learning &nbsp;(&nbsp;!&nbsp;)