Answer:
n×250=c
3000 people
Explanation:
Since each airplane seats 250 people and we need to see the total number of people able to be seated, we multiply the amount of airplanes by seats, and get the equation of n×250=c.
And then if we have 12 airplanes, n=12, the equation becomes 12×250=c.
c=3000 people
(hope this helps!)