Ok with all the silence I will give the answer
You take one weight from bag one, two from bag two, thre from bag three etc.
You then weigh all of these together you remove from the bags at once, and the answer is however many ounces you are over the total it should be (I am not working it out) that is the bag that has the 17 ounce weights.
For example if it was bag four you would be four ounces over because you had 4 of the weights that were 1 oz extra.
Ian