Two factors of 30 add up to 9. What are they?

factors of 30 are numbers by which 30 is divisible.

if we list out 30 as a product of factors 30 = 1 x 30

30 = 2 x 15

30 = 3 x 10

30 = 5 x 6

therefore all the factors of 30 are - 1,2,3,5,6,10,15,30

the numbers 3 and 6 add up to 9.

therefore the 2 factors that add up to 9 are 3 and 6