Question

Compounded ratio of duplicate ratio of 4:5, triplicate ratio of1:3, sub duplicate ratio of 81:256 and sub triplicate ratio of 125:512 is??

Answer 1

duplicate of 4:5 = 16/25
tripicate of 1:3  = 1/27
sub duplicate of 81:256 =9/16
sub triplicate of 125:512 =5/8

now mulitipliy (16*1*9*5) :(25*27*16*8)

=1/120

Answer 2

dupicate ratio of 4:5=16:25
triplicate ratio of 1:3=1:27
sub-duplicate ratio of 81:256=9:16
sub-triplicate ratio of 125:512=5:8
compounded ratio=720:86400