How to approach this kind of problems:

Of the 160 students in the seven graders, one-half of them belong to Drama Club. Of those, only ten participate in just Drama Club, while the rest also participate in Chorus. Only 30 of the seventh graders do not participate in either Chorus or Drama Club. How many seventh graders participate in only Chorus?

I am not sure if this is a percent problem, or a proportion problem, or a ratio problem. Can anybody give me a pointer so I can solve it myself?

Thanks

Hi brucejin

I think you can use venn diagram

Thanks venn diagram!

I got it.

50 students.