Question

a razão (1-2/3) : (2-1/6)equivale a :  a)2/11b)2/13c)10/13D) 10/11

Answer 1

$(1- \frac{2}{3}) \div (2-\frac{1}{6} )\\ \\ \Rightarrow \frac{1}{3} \div \frac{11}{6}\\ \\ \Rightarrow \frac{1}{3} \cdot \frac{6}{11} = \frac{6}{33}\\ \\ \Rightarrow \frac{6\div3}{33\div3}= \frac{2}{11}\\ \\ Resposta A.$