The sub duplicate ratio of 16:9 is
4: 3
<h3>Sub duplicate ratios</h3>
The sub-duplicate ratio is found by finding the square root of both the numerator and denominator
The given ratio is 16:9
Find the square root of 16

Find the square root of 9

Combining the two square roots that were found, the sub duplicate is:

Therefore, the sub duplicate ratio of 16:9 is
4: 3
Learn more on sub duplicate of ratios here: brainly.com/question/25881746