If 14 out of 20 people like chocolate milk, what percent of the people do not like chocolate milk?

A. 5%
B. 30%
C. 40%
D. 70%

B. 30%

do like = 14/20 * 5/5 = 70/100 = 0.70 = 70%

so
don't like = 100% - 70% = 30%