Using it's concept, the percentages are given as follows:
a) 74% of the students go to the movies twice a month or less.
b) 40% of the students prefer action movies.
The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:
[tex]P = \frac{a}{b} \times 100\%[/tex]
For this problem, we have that out of 200 students, 60 + 88 = 148 students go to the movies twice a month or less, hence the percentage is given by:
P = 148/200 x 100% = 74%.
74% of the students go to the movies twice a month or less.
For this problem, we have that out of 200 students, 60 + 20 = 80 prefer action movies, hence the percentage is given by:
P = 80/200 x 100% = 40%.
40% of the students prefer action movies.
More can be learned about percentages at https://brainly.com/question/10491646
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