What is the sub-duplicate ratio of 225 : 144?

Correct option is A

Given:

The ratio is 225 : 144.

Concept Used:
The sub-duplicate ratio of a given ratio a : b is the ratio of the square roots of a and b, i.e.,

Sub-duplicate ratio = $$\sqrt{a} : \sqrt{b}$$​

Solution:
For the ratio 225 : 144,

$$\sqrt{225} = 15, \quad \sqrt{144} = 12$$​

Thus, the sub-duplicate ratio is:

15 : 12