Asked by ~christina~

In a parking lot, the # of ordinary cars is larger than the # of sports utility vehicles. by 94.7%. The difference btwn the # of cars and the # of SUV's is 18. Find the # of SUV's.

<b>~My thoughts and work:

C= Cars #
S= SUV #

C-S= 18

(C/S)*100= 94.7%

Can I replace the C with the equation
since:
C-S= 18 so
C= S+18
thus....

[(S+18)/S] x 100= 94.7%

However after this I get a negative
S= -339
</b>

CAN SOMEONE PLEASE HELP ME???
I did work and I think that should be a good thing but I did work and nobody would help me on my last question...

THANK YOU

Answered by drwls
Your equation that deals with the C/S ratio is wrong. It should be
C/S = 1.947,
since (C-S)/S = 94.7% = 0.947
Combine that with C - S = 18

1.947 S - S = 18
0.947 S = 18
S = 19
Answered by ~christina~
Thank you so Much drwls!
I couldn't figure out why it was negative but now I know what I did wrong..
Thanks again =D
Answered by Tom
Where did the 1.947 come from?
Answered by Tom
Nevermind I found out; basically the 1.947 is intuitive by countering out the S
Answered by TJ
Where did the 1.947 come from. Can it be explained? How can you do C/S = 1.945? What are the values for C and S to make that true?
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