please help me and thank you.

the product of two whole numbers is 48 and their sum is less than or equal to 20.what are all the possiblities for the two whole number?

again thank you for helping me :]

Factors of 48:

1, 48
2, 24
3, 16
4, 12
6, 8

The sum of which pairs equal less than or equal to 20?