The compound ratio of 1:2, 3:2 and 4:5?	Choose the correct choice.
A) 1:9
B) 1:7
C) 1:2
D) 3:5
E) 1:4
1/2 * 3/2 * 4/5   = 3/5   =3:5   Answer: 3:5
<result>D</result>
The compound ratio of 1:2, 3:2 and 4:5?