Kyra observed that 85% of the students at a library liked reading mystery stories. If 30 students at the library did not like reading mystery stories, the number of students at the library who liked mystery stories was _____. (only put numeric values, no other symbols)
First, we need to find the total number students at the library.
30 people did not like reading mystery stories, and that is 15% of the people.
15% of the total people = 30 --Let's have x equal the total number of students.
15% of x = 30
.15*x = 30 ---Divide both sides by .15
x = 200
200 people is the total amount of students. 85% of them like mystery stories.
85% of the total amount of people = people that like mystery stories --Let's have y = people that like mystery stories
85% of the total amount of people = y
85% of 200 = y
.85*200 = y
170 = y
170 people like mystery stories.
First, we need to find the total number students at the library.
30 people did not like reading mystery stories, and that is 15% of the people.
15% of the total people = 30 --Let's have x equal the total number of students.
15% of x = 30
.15*x = 30 ---Divide both sides by .15
x = 200
200 people is the total amount of students. 85% of them like mystery stories.
85% of the total amount of people = people that like mystery stories --Let's have y = people that like mystery stories
85% of the total amount of people = y
85% of 200 = y
.85*200 = y
170 = y
170 people like mystery stories.