We can write two equations from this...
A+n = 3*(B-n) (Bob gives n dollars to Alice)
A - n = 2 * (B + n) (Alice gives n dollars to Bob)
We will get
A+n = 3B-3n
=A = 3B - 4n
=3A = 9B -12n
A-n = 2B+2n
=A = 3B + 3n
=4A = 12B + 12n
Then, we can add these together to get--
7A = 17B
=7A / B = 17
=A / B = 17 / 7
Hope this helped!
