Kinda odd question, not in the textbook :S
Taking a guess here:
But; change in consumption = change in savings from the table
So MPS = 0.5?
k = 1/MPS = 2
I just made up that on the spot by fiddling with the numbers
Hope its right :S
Yeah basically what the above person said but I think you could have expressed it a bit better so you don't confuse the OP. He means the change in consumption and change in savings in this question are the same. OP if you meant that then awkward for me :/ HAHA okies