Question

in a group of 100 people, 22 of them have brown hair. what percent of them dont have brown hair?

Explanation:

Step1: Find the number of people without brown hair

Total people = 40, people with brown hair = 22. So, people without brown hair = \( 40 - 22 = 18 \).

Step2: Calculate the percentage

Percentage = \( \frac{\text{Number of people without brown hair}}{\text{Total number of people}} \times 100 = \frac{18}{40} \times 100 = 45\% \).

Answer:

45%