I'm gonna ignore the part where you said "at is morcent of the base instruments in the hand learline the"...
So there are 600 sheep and goats in the hills, and we know the ratio of sheep to goats is 1 to 2.
This means that the number of goats are twice the amount of sheep.
Therefore the only values that work are:
200 : 400.
So there are 200 sheep.
Check:
200 + 400 = 600