15是40的( )% 40比30多( )%

问题描述:

15是40的( )% 40比30多( )%

15是40的(37.5 )%
15÷40x100%
=0.375x100%
=37.5%
40比30多(33.3 )%
(40-30)÷30x100%
=10÷30x100%
≈33.3%