Potato lab

we did a potato lab in class.
 we put 3 potatos in different solutions
potato A: is in 100% in water
potato B: is in 10 % of water
potato c: is in more than 10 % of salt
please help!
answer the follwoing questions:

1) Is the 100% water solution isotonic, hypertonic, or hypotonic to the potato core? Thoroughly explain using your knowledge of osmosis and cite evidence from the lab to back up your answer.
(i will relate back after)

2) Is the 10 % salt solution isotonic, hypertonic, or hypotonic to the potato core? Thoroughly explain using your knowledge of osmosis and cite evidence from the lab to back up your answer.

3) Make a hypothesis that predicts at what salt concentration a potato core would not change mass. Cite evidence from the lab to back your answer.