Please help me out the below problem.

Answer:
A=15x²
Step-by-step explanation:
hope that it will help you
The proper expression of A such that the fraction are equivalent is 15xy
cross multiply
3x(20y²) = A4y
divide both sides by 4y
A = 3x(20y²) / 4y
A = 60xy² / 4y
Therefore,
A = 15xy
learn more on equation here: https://brainly.com/question/24542957