In a college one day 120 students came to canteen. on that day 50 drank Tea,60 drank Coffee ,45 drank Cool drinks, 20 drank both Tea &Coffee, 15 drank both Coffee& Cool drink ,none drank both ,none drank all the three.
How many drank only tea?
(a) 42 (b) 30 (c) 22 (d) 32

• b)30
  no. of students drank tea = 50
  no. of students drank both tea & coffee = 20
  So,no. of students drank only tea is, 50-20 =30
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