Which value is the closest to the percentage of all the people who ate hamburgers that were adults

Hello!

let me guide you through this step by step:

if you add the total number of hamburgers eaten you will get 120

the adults ate 81 out of the 120 total

to find the percentage, divide 81 by 120, then multiply by 100 to find the percentage

81/120=0.675
0.675*100=67.5
your final answer is 67.5

I hope this helps, and have a nice day.