In a survey, 30 out of 200 people preferred online shopping. What is the percentage of people who preferred online shopping?

To find the percentage of people who preferred online shopping, you can use the formula for percentage, which is given by:

[ \text{Percentage} = \left( \frac{\text{Part}}{\text{Whole}} \right) \times 100

]

In this survey, the "part" refers to the number of people who preferred online shopping, which is 30, and the "whole" refers to the total number of people surveyed, which is 200. Plugging these numbers into the formula gives:

[ \text{Percentage} = \left( \frac{30}{200} \right) \times 100 ]

Calculating the fraction first:

[ \frac{30}{200} = 0.15 ]

Next, multiply by 100 to convert the decimal into a percentage:

[ 0.15 \times 100 = 15 ]

Thus, the percentage of people who preferred online shopping is 15%. This corresponds to the answer given and shows the correct calculation of the percentage based on the survey data provided.