Jacob has 3 and took 1 2/3 himself. He gave 1 1/3.
Joseph has 2 and took 1 2/3 himself. He gave 1/3.
the total given is 1 2/3.
1 1/3 of this 1 2/3 = 4/3 * 3/5 = 12/15 = 4/5
1/3 of this 1 2/3 = 1/3 *3/5 = 3/15 = 1/5
5 Coins in total, so:
Jacob gets 4 Coins.
Joseph gets 1 Coin.