Triplicate ratio of `2 : 1` is

Triplicate ratio of 2:3 is _______

Find the : (i) duplicate ratio of 2sqrt(2) : 3sqrt(5) (ii) triplicate ratio of 2a : 3b , (iii) sub-duplicate ratio of 9x^(2)a^(4) : 25y^(6)b^(2) (iv) sub-triplicate ratio of 216 : 343 (v) reciprocal ratio of 3: 5 (vi) ratio compounded of the duplicate ratio of 5 : 6 , the reciprocal ratio of 25 : 42 and the sub-duplicate ratio of 36 : 49 .

Sub triplicate ratio of 512:343 is....

Find the triplicate ratio of 7 : 5.

Calculate the sub-triplicate ratio of 512 : 729.