If the volume of two cubes are in the ratio 125:1, the ratio of their edges is:
Choose the most appropriate option: A) 3 : 1 B) 5 : 1 C) 3 : 5 D) 3 : 7 E) none of these

Rationale: "explanation : let the edges be a and b of two cubes , then a 3 / b 3 = 125 / 1 = > ( a / b ) 3 = ( 5 / 1 ) 3 a / b = 5 / 1 = > a : b = 5 : 1 option b"
Answer: B