The ratio of two numbers is 5 : 4 and their HCF is 4. What is their LCM?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 80.
We know that,
LCM = a × b × HCF
Where a and b are the two numbers in the ratio
Now,
Let the two numbers be 5x and 4x
⇒ 5 × 4 × 4 = LCM
⇒ LCM = 80
Hence, the L.C.M is 80