Correct option is B
Given:
Ratio of two numbers = 3:5
LCM of these number = 75
Solution:
Let the two number be 3x and 5x
As we know,
LCM of 3x and 5x = 15x
HCF of 3x and 5x = x
According to the question
15x = 75
⇒ x = 5