If x:y be the ratio of two whole numbers and z be their HCF then the LCM of these two numbers is:
Answer & explanation
Correct answer: option 3
Ratio of the numbers = x : y
HCF of the numbers = z
So, z is the common factor of the numbers
Then, First number = xz
Second Number = yz
Now,
First Number × Second Number = HCF × LCM of the numbers
xz × yz = z × LCM
LCM = xyz