Kyra observed that 85% of the students at the library liked reading mystery stories. If 30 students don't like reading mysteries the number of students at the library who like mysteries were?

Question

anonymous · Answer

170

anonymous · Answer

100 - 85 = 15%
so 30 people is 15% of the class
85/15 = 5.666
30 * 5.666 =170 people rounded

anonymous · Answer

what bannemohr said

imstuck · Answer

or you could figure it as 30 is 15% of what number of people total?  That comes out to 200, then you just subtract the 30 who don't like mysteries from the 200 to get the number of people who do like mysteries. Either way...