Of the 15 cars in a parking lot, 5 are green, 2 are gold, and the rest are black. What are the odds against the next car leaving the lot being black?
A) 8:15
B) 7:15
C) 7:8
D) 8:7

Question

Of the 15 cars in a parking lot, 5 are green, 2 are gold, and the rest are black. What are the odds against the next car leaving the lot being black?
A) 8:15
B) 7:15
C) 7:8
D) 8:7

agent0smith · Answer

How many non-black cars are there?

How many black cars are there?

non-black : black   
would be the odds against the next car being black

ilovepuppies · Answer

To find the first part do:
5 + 2 = 7 so the first part is 7:?
Now do 15-5-2 = 8 
So 8 black cars and 7 cars 
So 7:8

agent0smith · Answer

Good job.