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I do not know where to start.

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I do not know where to start.

by Jpsphat » Thu Oct 15, 2009 10:13 am
2. A customer pays $1,100 in state taxes on a newly purchased car. What is the value of the car if state taxes are 8.9% of the value?

A. $9.765.45
B. $10,876.90
C. $12,359.55
D. $14,345.48
E. $15,745.45
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by fiercepoint » Thu Oct 15, 2009 10:32 am
You can set up a proportion and solve it by cross-multiplying:
8.9% = 1,100
100% = x

8.9x= 110,000
x=12,359

This particular problem can also be easily solved if you think of it this way: since 8.9% or approximately 10% of the total is 1,100, then total will be a little more than ten times 1,100 or just over 11,000.
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by sadullaevd » Thu Oct 15, 2009 7:58 pm
If you round off 8.9% to 9% and then calculate

9%=1100

100% will be around 12000,

the c answer fits it.(it takes less than 1 min)

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by mjsobo » Sun Oct 18, 2009 3:13 pm
agree that rounding to 9% is a good idea. another quick tip could be to know that 100%/9% approx equals 11, so you can just multiply 1100 by 11 to find a close approximation of 12100.
So C is answer
Martin
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