如果a:b=3/4,那么(a×2/5):(b÷5/2)=( ) A.3/4 B.3/4 C.3/5 D.15/16

问题描述:

如果a:b=3/4,那么(a×2/5):(b÷5/2)=( ) A.3/4 B.3/4 C.3/5 D.15/16

(a×2/5):(b÷5/2)
=2/5a/(b*2/5)
=a/b
=3/4