Add them up.
16, 18, 20, 21, 22, 24
12 and 16 is another.
The composite numbers upto 28 are: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28.Of these the ones that sum to 28 are: 4 and 24, 6 and 22, 8 and 20, 10 and 18, and 12 and 16. And out of these pairs the ones that have a gcd of 4 are: 4 and 24, 8 and 20, and 12 and 16.So two composite numbers that have a gcd of 4 and a sum of 28 can be either: 4 and 24, 8 and 20, or 12 and 16.
They can be 16 and 24
Two composite numbers that have 8 as a factor are 16 and 24. Both of these numbers can be divided evenly by 8, resulting in whole numbers (2 for 16 and 3 for 24). Additionally, they are composite because they have factors other than 1 and themselves.
Composite factors of 24 are 4, 6, 8, 12 and 24. Sum of composite factors = 4+6+8+12+24 = 54.
4 and 24, 12 and 16
12 and 16 is another.
The composite numbers upto 28 are: 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28.Of these the ones that sum to 28 are: 4 and 24, 6 and 22, 8 and 20, 10 and 18, and 12 and 16. And out of these pairs the ones that have a gcd of 4 are: 4 and 24, 8 and 20, and 12 and 16.So two composite numbers that have a gcd of 4 and a sum of 28 can be either: 4 and 24, 8 and 20, or 12 and 16.
4 and 24 is one such pair.
They can be 16 and 24
They can be 16 and 24
The numbers are 24, 25, 26, 27, 28 and their sum is 130
Two composite numbers that have 8 as a factor are 16 and 24. Both of these numbers can be divided evenly by 8, resulting in whole numbers (2 for 16 and 3 for 24). Additionally, they are composite because they have factors other than 1 and themselves.
16 and 24
16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30,
Composite factors of 24 are 4, 6, 8, 12 and 24. Sum of composite factors = 4+6+8+12+24 = 54.
Composite numbers are positive integers greater than 1 that have more than two factors. Between 15 and 25, the composite numbers are 16, 18, 20, 21, 22, 24. These numbers can be divided evenly by factors other than 1 and themselves, making them composite.