At a certain school, 240 of the students take math, 180 of the students take grammar, and 100 of the students take both. If every student must study either math or grammar, how many students attend this school?

• n(A)-> number of students who study maths
  n(B)-> number ofstudents who study grammar
  n(A U B)-> number of students who study both
  n(A U B)=n(A)+n(B)-n(A ∩ B)
  n(A U B)= 240+180-100
  n(A U B)= 320
• 10 years agoHelpfull: Yes(0) No(0)