Other Problems:
From Adam Ries: Rechnung auff der Lini (1525) From Adam Ries: Coß (1524)


First daughter Second daughter Wife Son
X X 2X 4X

X+X+4X+2X = 3600

Divide 10 into two parts
with quotient equal to 10


Thus:

  • X+Y = 10
  • X/Y  = 10

Solution:
  • X = 100/11,
  • Y = 10/11

Here, the variables X and Y are used to determine specific numbers!