Final answer:
The ratio of people who prefer chocolate to vanilla ice cream, based on the survey results, is 28:58.
Step-by-step explanation:
The ratio comparing chocolate to vanilla from the survey results is 28 to 58. When writing ratios, we compare two quantities by writing them as a fraction. In this case, the number of people who prefer chocolate ice cream to vanilla can be expressed as 28/58. To simplify, both numbers can be divided by their greatest common divisor. However, since we want to compare the exact numbers from the survey, we will keep the ratio in its original form. Therefore, the ratio is 28:58.