In a fifth grade class, 3/4 of the students like to go to the movies. Of the students who like to go to the movies, 2/3 of them like action movies. Of the students who like to go to action movies, 4/5 of hem also like comedies. What fraction of the students in class like to go to action movies? What fraction of the students like to go to action and comedies?

Verified Answer :

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The process of solving this problem is as follows:

Students who like action movies: 3/42/3 = 1/2 of the fifth grade class students
Students who like comedies: 1/2
4/5 = 2/5 of the fifth grade class students


Answer: 1) 1/2 students like to go to action movies,

2) 2/5 students like to go to action and comedies.

Step-by-step explanation:

Let the total number of students are x,

Thus, the number of students who like to go movies = 3/4 of total students = \(\frac{3x}{4}\)

The number of students who like to go action movies = 2/3 of students who like to go movies = 2/3 of 3x/4 = \(\frac{6x}{12}\) = x/2

Hence, the total fraction of students who like to go action movies = Number of students who like to go action movies / Total students

= \(\frac{x/2}{x}\)

= 1/2

Now, the number of student who like to go comedy movie = 4/5 of the students who like to go action movies

= 4/5 of x/2

= \(\frac{4x}{10}\)

= \(\frac{2x}{5}\)

Hence, the fraction of students who like to go comedy movies

=  Total students who like comedies/ Total students

= \(\frac{2x/5}{x}\)

= 2/5