甲数是乙数的五分之四,乙是甲的几分之几,乙占甲乙和的几分之几

问题描述:

甲数是乙数的五分之四,乙是甲的几分之几,乙占甲乙和的几分之几

乙是甲的:5/4=5/4
乙占甲乙和的5/(4+5)=5/9