Question

what percentage of the people surveyed did not have blonde hair?
hair color | no. of people
brown | 60
blonde | 92
black | 100
red | 148

Explanation:

Step1: Calculate total people surveyed

First, we sum up the number of people for each hair color. The number of people with brown hair is 60, blonde is 92, black is 100, and red is 148. So the total number of people surveyed is $60 + 92 + 100 + 148$.
Calculating that: $60+92 = 152$, $152 + 100 = 252$, $252+148 = 400$. So total people is 400.

Step2: Calculate number of people without blonde hair

The number of people with blonde hair is 92, so the number of people without blonde hair is total people minus people with blonde hair, which is $400 - 92 = 308$.

Step3: Calculate the percentage

To find the percentage of people without blonde hair, we use the formula $\text{Percentage} = \frac{\text{Number of people without blonde hair}}{\text{Total number of people}} \times 100\%$.
Substituting the values: $\frac{308}{400} \times 100\%$.
Simplify $\frac{308}{400}$: divide numerator and denominator by 4, we get $\frac{77}{100}$, so $\frac{77}{100} \times 100\% = 77\%$.

Answer:

77%