Question

Eric conducted a survey of the cars in four parking lots and wrote the following observations: 15 of the 36 cars in lot 1 were blue 43 of the 92 cars in lot 2 were blue 12 of the 30 cars in lot 3 were blue 32 of the 52 cars in lot 4 were blue based on the survey, which parking lot had the greatest present age of blue cars

Answer 1

Lot One:
15 divided by 36 = 0.4166  convert to % by moving the decimal two places to the right.  round if needed. 
Lot One = 41.66 %

Lot Two:
43 divided by 92 = 0.4673
Lot One = 46.73 %

Lot Three:
12 divided by 30 = 0.4
Lot Three = 40%

Lot Four:
32 divided by 52 = 0.6153
Lot Four = 61.53 %

Lot Four had the greatest % of Blue cars.

Answer 2

The percentage of blue cars in the lot is the ratio of the number of blue cars to the total number of cars in each lot ; Hence, lot D has the greatest percentage of blue cars

Percentage of blue cars in each lot :

• Number of Blue cars / total number of cars

Lot A :

% blue cars = 15 / 36 = 0.4167

Lot B :

% blue cars = 43 / 92 = 0.4673

Lot C :

% blue cars = 12 / 30 = 0.40

Lot D :

% blue cars = 32 / 52 = 0.615

Therefore, lot D has the greatest percentage of blue cars.

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