求比值2分之1:25% 0.15:4分之3 50克:0.2千克化簡比0.3時8釐米:200米0.8:5.6

求比值2分之1:25% 0.15:4分之3 50克:0.2千克化簡比0.3時8釐米:200米0.8:5.6

2分之1:25% =0.5÷0.25=2
0.15:4分之3 =0.15÷0.75=0.2
50克:0.2千克=0.05÷0.2=0.25
化簡比
15分:0.3時
=15分:18分
=5:6
8釐米:200米
= 8釐米:20000釐米
=8:20000
=1:2500
0.8:5.6
=8÷56
=1/7