Okay, I made a venn diagram...
It said Total students = 30.
German and Italian and both, right.
No. of people who took Italian were the same no. of people who took both subjects.
And people who took one subject were 3 more than the people who took the other one.
Then I plugged in numbers...
If 9 people took Italian, then 9 people took both German and Italian, So people who took German was 18+3 = 21. And 21+9=30.
I don't know if that makes any sense... but I'm hoping 9 is right.
