Answer:
3/5
Explanation:
Fractions can be written as:
part/whole
In this case, the part is the number who prefer rock music and the whole is the total number of students in the class.
We know, from the table, that 18 students prefer rock music. We also know, from the information above the table, that there are 30 students in the class. Therefore,
part=18 students
whole=30 students
part/whole
18 students /30 students
18/30
This fraction can be simplified. Both the numerator (top number) and denominator (bottom number) can be divided by 6.
18/6 / 30/6
3/ 30/6
3/5
3/5 of the class preferred rock music, and the second choice is correct.