What percent of all children like the simpsons? round your answer to the nearest tenth of a percent. type a numerical answer in the space provided. do not include % or spaces in your answer.?

The picture in the attached figure

we know that
total boys=50+30+20------> 100
total girls=50+80+70------> 200
total chldren=total boys +total girls---------> 100+200-----> 300

number of boys who like the Simpsons=20
number of girls who like the Simpsons=70
number of children who like the Simpsons=20+70-----> 90

What percent of all children like the Simpsons?
P=number of children who like the Simpsons divided by total children
P=90/300------> 0.3  (30%)

the answer is
0.3