Answer: 3,000
Explanation:
Given : In a recent local taste contest testing Coke against Pepsi it was found that
of all people surveyed preferred to taste the Coke.
If 7,500 people were in the survey , then the number of people chose coke will be :-

Now, the number of people chose Pepsi = 7,500-4,500=3,000
Hence, there are 3,000 people who chose Pepsi.