Find the inverser ratio of the compound ratio of 5:2,4:3,1:10
1:3
3:1
1:1
None
compound ratio will be 5 x 4 x 1 : 2 x 3 x 10
=20:60 =1:3
now the inverse ratio of 1:3 will be 3:1
Find the compound ratio of: Duplicate ratio of 4 : 5 and triplicate ratio of 5 : 3.