There are 20 cars in my building's parking lot. all of the cars are red or white. also, all the cars are either 2-door or 4-door. 12 of them are red, 15 of them are 4-door, and 4 of them are 2-door and white. how many of the cars are 4-door and red?

11 cars

Step-by-step explanation:

There are 20 cars in my building's parking lot, 15 cars are 4-door, then

cars are 2-door.

5 cars are 2-door, 4 of them are 2-door and white, then

car is 2-door and red.

12 cars are red, 1 car is 2-door and red, then

cars are 4-door and red.

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step-by-step explanation: