Math
posted by Catherine .
There are 300 students in the junior class at a high school.
100 students participate in theater.
70 students are involved in chorus.
140 students play a sport.
35 students are in chorus and are involved in theater, while 15 students play a sport and participate in theater.
No members of the chorus play sports.
How many students in the junior class are in none of these activities?
I'm thinking 40, but I'm not sure. Help please!

Math 
Steve
I get 40 as well.
100+70+140  35  15 = 260
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