36 min 30 s=( )s=( )h 2.4 h=( )h=( )min

问题描述:

36 min 30 s=( )s=( )h 2.4 h=( )h=( )min

36 min 30 s=(2190 )s=(0.61 )h
2.4 h=( 2又15分之1)h=(144 )min