15 take math only
8 take bio only
8 take tech only
4 take bio and math
7 take math and tech
6 take bio and tech
2 take all
15 take math only, so put 15 in region a
8 take bio only, so put 8 in region c
8 take tech only, so put 8 in region g
2 take all, so put 2 in region e
4 take bio and math, so put 4 in region b
7 take math and tech, so put 7 in region d
6 take bio and tech, so put 6 in region f
Let's add all those:
15+4+8+7+2+6+8 = 50
what is the percentage of the students take math OR tech
They all take math or tech except for the 8 who take
bio only. So 50-8 or 42 out of 50 take math or tech.
50x = 4200
x = 84
Answer 84%
Edwin
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