The LCM of two numbers is 30 and their HCF is 5. One of the numbers is 10. The other is:
The LCM of two numbers is 30 and their HCF is 5. One of the numbers is 10. The other is:
[A]20
[B]15
[C]5
[D]25
15
Because, First number 
Let the Second Number be x.
∴ 10x = 30
Hence option [B] is the right answer.
