Since the cell contains just 20% salt solution while the solution in the beaker is 40% salt, the cell will shrink as water moves out of it.
The solution in the beaker is said to be hypertonic while the one in the cell is said to be hypotonic. Hypertonic solutions have lower water potentials than hypotonic solutions. This means that the cell has a higher water potential than the solution in the beaker.
Recall the definition of osmosis: the movement of water molecules from the region of high water potential to the region of low water potential through a semi-permeable membrane.
Thus, water molecules would move from the cell to the solution in the beaker. This will make the cell shrink as time goes by.
More on osmosis can be found here: https://brainly.com/question/21395644