To calculate a fraction of another number, we simply divide by the denominator.

See below in Bold.

Step-by-step explanation:

2. 1/3 * 12 = 4 white cars.

1/4 * 12 = 3 blue cars.

Number of black cars = 12 - (3 + 4) = 5 black cars.

maximum area = xy = (16)(32) = 512 ft2

to maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.'

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