Question

The ratio compounded of duplicate ratio 4:5, triplicate ratio of 1:3,sub duplicate ratio of 81:256, sub triplicate ratio of 125:512,is​

Answer 1

here is the answer.....

duplicate ratio =(4/5)^2 = 16/25

triplicate ratio = (1/3)^3 = 1/27

sub duplicate =√(81/256) =9/16

sub triplicate = 3√(125/512) = 5/8

so,

compunded ratio =

(16 × 1 × 9 × 5)/(25 × 27 × 16 × 8)

solving it uh will get......

1:120