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by ketkoag » Wed Apr 01, 2009 11:52 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
I think answer should be D but OA is C.
Please explain how??
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by moutar » Wed Apr 01, 2009 11:57 am
1 unit would be 9 cars.

Therefore 3 units would be 27.

OA is wrong.
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