The boy would receive 2 times that of his mother
Son to Mother = 2:1
The mother would receive 2 times that of her daughter
Mother to Daughter = 2:1
The Mother would receive 2 of the seven portions
The Son would receive 4 of the seven portions
The Daughter would receive 1 of the seven portions
Each boy would receive 2 times that of his mother
Son to Son to Mother = 2:2:1
The Mother would receive 1 of the five portions
Each Son would receive 2 of the five portions
The Mother would receive 2 times more than each of the Daughters
Mother to Daughter to Daughter = 2:1:1
The Mother would receive 2 of the four portions
Each Daughter would receive 1 of the four portions