Question

Does anyone know how to tackle this problem:
At Central High School, the math club has 15 members and the chess club has 12 members. If a total of 13 students belong to only one of the two clubs, how many students belong to both clubs?

Answer 1

\[15+12\] equals what

Answer 2

27

Answer 3

okay, so, subtract 13 out of the 27 and then you will get your answer

Answer 4

14 !

Answer 5

GREAT!

Answer 6

Even though the site I'm on marked me wrong, maybe there should be some type of equation set up?

Answer 7

what? what site is it? do you have the link?

Answer 8

http://sat.collegeboard.org/practice/answered-question-of-the-day?src=E&questionId=20120714&answerCd=E&ep_ch=QD&ep_mid=10571831&ep_rid=69685642

Answer 9

im looking at it

Answer 10

alrighty.

Answer 11

okay lets try to work it out.

Answer 12

let me get a pen

Answer 13

okay

Answer 14

math=15 members

Answer 15

and chess = 12 members

Answer 16

Uhuh.

Answer 17

so, math has 2 groups, those who are in both, and those who are only in math, which is 15-n

Answer 18

chess has 12- the ones who are in both, so 12-n

Answer 19

13 belong to only one of the two clubs

Answer 20

Right.

Answer 21

(15-n)+(12-n)=13

Answer 22

when we solve this, n=7

Answer 23

i got this by randomly clicking answers cuz im only going into the 6th grade soo... yeah

Answer 24

Seeing it made more sense, I really did not understand forming an equation with this but now it makes sense.
Ty.

Answer 25

Lol oh alright

Answer 26

yeah i'll message u okay ttyl

Answer 27

k :D