Question

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Krystal observed that 85% of the students at a library liked reading mystery stories. If 30 students at the library didn't like reading mystery stories the number of students at the library who like reading mystery stories was_______

Answer 1

Assuming that the 100 – 85 = 15% are those who do not like reading mystery stories. It can solved by: Let x = number of students in the library 30 = .15x X = 200 Therefore, number of students in the library who liked reading mystery stories are 200(0.85) = 170.