There are 516 cars in a parking lot. One-third are blue, one-half are red, and the rest are black. How many black cars are on the lot?
Blue = 516 * (1/3) = <<516*(1/3)=172>>172 cars
Red = 516 * (1/2) = <<516*(1/2)=258>>258
Black = 516 - (172 + 258) = 86
There are 86 black cars on the lot.
#### 86