<em><u>The equation shows how to find the percent increase:</u></em>
<em><u>Solution:</u></em>
Given that,
A town’s population of children increased from 376 to 421 during the past year
To find: percent increase
<em><u>The percent increase is given by formula:</u></em>
From given,
Initial value = 376
Final value = 421
Thus the equation is found and solved