30% of the cars in a particular parking lot are red. If there are 12 red cars, how many cars are parked in the parking lot?
A) 20
B) 30
C) 40
D) 60
The answer is 4x4x4
To find the total number of cars in the parking lot, we can use the information that 30% of the cars are red.
Let's assume the total number of cars in the parking lot is "x".
We are given that 30% of x is equal to 12 red cars.
So, we can set up the equation:
0.3x = 12
To solve for x, we can divide both sides of the equation by 0.3:
x = 12 รท 0.3
x = 40
Therefore, there are 40 cars parked in the parking lot.
The answer is C) 40.
To find the total number of cars parked in the parking lot, we can use the concept of proportions. Since 30% of the cars are red, this means that 30% of the total number of cars is equal to 12.
Let's represent the total number of cars with the variable "x". Hence, 30% of x is equal to 12. Mathematically, we can express this as:
(30/100) * x = 12
To solve for x, we need to isolate it on one side of the equation. We can do this by dividing both sides of the equation by (30/100):
x = 12 / (30/100)
Dividing 12 by (30/100) is the same as multiplying 12 by its reciprocal:
x = 12 * (100/30)
Simplifying this expression, we get:
x = 40
Therefore, there are 40 cars parked in the parking lot.
The correct answer is C) 40.