Question

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 _____.

Answer 1

`It is said that 85% of the students liked reading mystery stories. This means the remaining 15% don't like to read these stories. If there are 30 students belonging to the second category, then the number of students who liked reading mystery stories is (30/0.15)*0.85 equal to 170 students out of 200 students.`

Answer 2

yea but theres no way there is 170 students or whatever u just said. its probs more around 35 or 40

Answer 3

30 students = 85%

Answer 4

Google said so.
Do wateva yew must.

Answer 5

@Kamauri

Answer 6

85% like mystery stories,
30 don't like mystery stories, thus 30 is 15% of the total number of students.
\[0.15x = 30\]
15% of x is 30
\[x = 200\]
\[200 \times 0.85 = 170\]
85% of 200 = ....

Answer 7

there is no 200. where are u guys getting that number?

Answer 8

Would you agree that 10 is 10% of 100?

Answer 9

yes

Answer 10

but in this case, its 30 = 85%

Answer 11

10% converted to a decimal is 0.10
Multiply 100 by 0.10 and you get 10

Answer 12

That is how you find the number of which a percentage represents.

Answer 13

Oh I see the issue

Answer 14

"85% of the students at a library liked reading mystery stories."
LIKE
"30 students at the library did not like reading mystery stories"
DO NOT LIKE
"number of students at the library who liked mystery stories"

Answer 15

Equating 85% to 30 is not correct.

Answer 16

0.0 i read it wrong

Answer 17

i thought it was saying that 85% = 30 and u had to find how much 15% would be 0.0

Answer 18

Well since 85% like reading stories and 30 people don't, we know that 30 is 15% of total # of people.

Answer 19

right.

Answer 20

All good?

Answer 21

yea, but arent i supposed to find out how many ppl the 85% would be since 30 =15%?

Answer 22

Yes, figure it out? :D

Answer 23

15% + 15% + 15% + 15% + 15% + 15% + 15% = 105%
30 + 30 + 30 + 30 + 30 + 30 + 30 = 210

You can approximate this way if you're not fully convinced.
We know that 7 of these 15%'s is near 100%.
So 7 of these 30's will be 210.

So your end results should be somewhere around 210.

Confused by Elsa's steps? :d

Answer 24

@Zepdrix You almost gave me a heart attack when I scanned this and saw 210 lol

Answer 25

x'D

Answer 26

@Nevey Do you get the concept?

Answer 27

i already answered lol. i believe i put 170 for it.