A = 21
B = 15
AuB = ???
Businesses did not report a net profit = 30 - AuB
Statement I : AuB = A + B - AnB
AnB = 12 so we can calculate AuB (which is 24) so it is sufficient
Statment II : AuB = 24 therefore we can calculate the no of businesses which did not report a net profit
P.S : Plz donot post answers.