Peter has 12 dollars in his pocket and James has 15 dollars. They want to give money to each other. How much money will they have left after they give to each other the same but highest possible amount?

It would be 3 dollars because all you need to do is subtract 15-12

Answer: Three Dollars

Step-by-step explanation: The factors and prime factorization of 12 and 15. The biggest common factor number is the Greatest Common Factor number. So the greatest common factor 12 and 15 is 3.

If you think about it it is just greatest common factor.

the factors of 12 are 1, 2, 3, 4, 6, 12

The factors of 15 are 1, 3, 5, 15

the highest number they have in common is 3

so the answer to your question is three.