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
IMO, it is D. But OA says it is C.
My steps are as follows:
Given that R/B = 3/8
=> 3/8 = R/72
=> R = 3*72 / 8 = 27
A. 11
B. 15
C. 24
D. 27
E. 32
IMO, it is D. But OA says it is C.
My steps are as follows:
Given that R/B = 3/8
=> 3/8 = R/72
=> R = 3*72 / 8 = 27
