Answer
138 people
Work Step by Step
We see that 15.1% of people buy Blue Bell ice cream. We see that 9.3% of people say they buy Ben and Jerry's. Thus, the difference in percentage is:
$$ =15.1-9.3 \\ = 5.8 \%$$
Since 2373 people were surveyed, the difference in people is:
$$ =.058 \times 2373 \\ =138\ people$$
