问题
选择题
甲比乙多2倍,乙比丙多
|
答案
[(1+
)×(2+1)]:(1+1 2
):1,1 2
=
:9 2
:1,3 2
=(
×2):(9 2
×2):(1×2),3 2
=9:3:2;
故选:D.
甲比乙多2倍,乙比丙多
|
[(1+
)×(2+1)]:(1+1 2
):1,1 2
=
:9 2
:1,3 2
=(
×2):(9 2
×2):(1×2),3 2
=9:3:2;
故选:D.