Question

what percentage of the people surveyed didnt select porsche as their favorite car?
favorite car | no. of people
holden | 35
mazda | 100
porsche | 75
ferrari | 290
favorite car is not porsche = %

Explanation:

Step1: Calculate total number of people surveyed

First, we sum up the number of people for each car brand. So we add 35 (Holden), 100 (Mazda), 75 (Porsche), and 290 (Ferrari).
$$35 + 100 + 75 + 290 = 500$$

Step2: Calculate number of people who didn't select Porsche

Subtract the number of people who selected Porsche (75) from the total number of people (500).
$$500 - 75 = 425$$

Step3: Calculate the percentage

To find the percentage, we use the formula $\text{Percentage} = \frac{\text{Number of people not selecting Porsche}}{\text{Total number of people}} \times 100\%$.
Substitute the values: $\frac{425}{500} \times 100\% = 85\%$

Answer:

85%