一根十分之九米长的绳子,截去它的三分之一,截去多少米?还剩多少米?

题目

一根十分之九米长的绳子,截去它的三分之一,截去多少米?还剩多少米?
RT

答案

截去(9/10)x(1/3)=0.3米,剩余9/10-0.3=0.9-0.3=0.6米