Originally posted by Mephisto2
Dogs typically cost about 4 dinars, no?
1 sheep - 1 dog = 1 goat + 1 dog
1 sheep - 1 goat = 2 dogs
A sheep is 10 dinars, but what does a goat cost?
The money they received for their camels is a square. And the decade of this square is odd (total money / 10 dinars), because they could not divide the sheep equally.
Now the interesting thing is that all squares with an odd decade end on a 6. (16^2 = 256, 24^2 = 576). So a goat costs always 6 dinars.
10 - 6 = 2 dogs
So a dog costs 2 dinars