一.解比例.1.x/9=4/32.3/2:6/5:4/33.0.15:30%=4/1:x1

Question

一.解比例.
1. x/9=4/3
2.3/2:6/5:4/3
3.0.15:30%=4/1:x
1

Answer 1

1.x=12
2.
3.x=4*0.3/0.15=8