12米比( )少20% ( )比16少40%

问题描述:

12米比( )少20% ( )比16少40%

12米比(   15  )少20%
12÷(1-20%)
=12÷0.8
=15米
(  9.6     )比16少40%
16×(1-40%)
=16×60%
=9.6