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by netigen » Tue May 27, 2008 1:29 am
The ratio of the number of red cars in a certain parking lot to the number of black cars is 3 to 8. If there are 72 black cars in the lot, how many red cars are there in the lot?

A. 11
B. 15
C. 24
D. 27
E. 32
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by ksh » Tue May 27, 2008 3:09 am
Is the ans 27?

no. of red cars=72=9*8
therefore, black car=3*9=27
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by netigen » Tue May 27, 2008 11:37 am
Thats was my answer too, OA was 24. Again I think OA is wrong.
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by gmatinjuly » Wed May 28, 2008 4:15 am
Same here, i got a 27 too

R/B = NO OF CARS R/NO OF CARS B
3/8 =Rnum/72
Rnum = 3*72/8 = 27
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by AleksandrM » Wed May 28, 2008 9:21 am
I, too, got 27.

24/72 does not reduce to 3/8. End of story.
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