Question

2s:3t is the duplicate ratio of 2s-p :3t-p then

A . p^2= 6st
B . p= 6st
C . 2p=3st
D . none of those

Answer 1

Just like in your previous question , I looked up "duplicate ratio"
http://www.math-only-math.com/types-of-ratios.html

and again, just follow the definition

( Where and in what course are they teaching this?)

Answer 2

I don't no answer please answer me