先化简比,再求比之;0·7:0·42 = 5/6:4 = 1/4千克:500克

问题描述:

先化简比,再求比之;0·7:0·42 = 5/6:4 = 1/4千克:500克

0.7:0.42
=70:42
=10:6
=5:3
=5/3
5/6:4
=(5/6)*(1/4)
=5/24
1/4千克:500克
=(1000*1/4):500
=2*1/4
=1/2