Question

The least common multiple of two numbers is 60. the prime factorization of one number is 3 times 5. what is the prime factorization of the other?

Answer 1

The first number would be 3×5=15. 
Another number could have different values. it could be
4=2×2
12=2×2×3
20=2×2×5
60=2×2×3×5