RRB NTPC 17 January 2017 Paper

(2) The ratio of numbers = 3 : 5HCF = 20 LCM = ?
HCF = 20 and the numbers are in the ratio of 3 : 5 ,
We can assume the numbers to be20×3 = 60 and 20×5 = 100
Now, product of two numbers =HCF×LCM
∴ 100×60 = 20×LCM
⇒ LCM = 300