It is known that the least common multiple of two numbers is 60. The greatest common factor is 5. One of the numbers is 20. What is the other number?

It is known that the least common multiple of two numbers is 60. The greatest common factor is 5. One of the numbers is 20. What is the other number?


60=5*4*3
20=5*4
Since the greatest common factor is 5, it means that another number has no 4, and that can only be 3
Therefore: 5 * 3 = 15
The other number is 15



The least common multiple of two numbers is 1200 and the greatest common factor is 20. Given that one of the two numbers is 80, what is the other?


1200×20÷80
=24000÷80
=300



The least common multiple of two numbers is 1200, and the greatest common divisor is 20. Given that one of the two numbers is 80, then the other is ()


300