Were there more people that were under 20 or 20 and over ?
A. under 20
B.20 and over

it's A, under 20

Step-by-step explanation:

if you add 15 to 45 you get 60, 30 plus 60 is 90, completing that side of the chart.

then, add 9 to 45 to get 54. there are 54 people under 20, and there are 36 people over 20. so the answer is A, there are more people under 20.