19% of the voters were in Favor of building the shopping center.
Step-by-step explanation:
Total voters in the city = number of votes in favor of the shopping center + number of votes against the shopping center.
Percentage= (No. of votes in favor of shopping center / total voters)[tex]\times[/tex]100
⇒ (4000/21,000)[tex]\times[/tex]100
⇒ (4/21)[tex]\times[/tex]100
⇒ 19%
∴ 19% of the voters were in Favor of building the shopping center.