Calculate the ratio between x and y if 80% of x equal to 20% of y?  Choose the correct answer:
A) 1 : 1
B) 3 : 1
C) 4 : 5
D) 4 : 3
E) 4 : 1

Rationale: explanation : 80 x = 20 y x : y = 80 : 20 = 4 : 1 answer : e
Answer: E