can you answer my venn diagram problem?

venn diagram: 30 enrolled in algebra, calculus, and trigonometry; 40 in algebra and trigo; 45 in trigo and calculus; 50 in algebra and calculus; 80 in algebra and 70 in calculus. if 130 students are enrolled in all, how many students are enrolled in trigo?
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2 Answers

????????? yu got sum wae for us tu draw several overlapping serkels on this thang ???????
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85 10 a and t, 30 a, t and c, 15 t and c, 30 just t = 85
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