Home » Aptitude » LCM and HCF » Question
  1. The LCM of two numbers is 4 times their HCF. The sum of LCM and HCF is 125. If one of the number is 100, then the other number is
    1. 5
    2. 25
    3. 100
    4. 125
Correct Option: B

Let LCM be L and HCF be H, then
According to question ,
L = 4H
sum of LCM and HCF = 125
⇒ H + 4H = 125
⇒ 5H = 125

⇒ H =
125
= 25
5

∴ L = 4 × 25 = 100
∴ Second number =
L × H
First number

Second number =
100 × 25
= 25
100



Your comments will be displayed only after manual approval.