Em um colégio, de 100 alunos, 80 gostam de sorvete de chocolate, 70 gostam de sorvete de creme e 60 gostam dos dois sabores. Quantos alunos não gostam de nenhum dos dois sabores? * 1 ponto a) 0 b) 10 c) 20 d) 30 e) 40

The answer is b i’m sure

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,