Calculate the ratio between x and y if 30% of x equal to 50% of y?	Choose one
A) 4 : 5
B) 3 : 5
C) 3 : 7
D) 3 : 2
E) 4 : 5

Rationale: "explanation : 30 x = 50 y x : y = 30 : 50 = 3 : 5 answer : b"
Answer: B