|A balance scale is underwater with some lead on one side
and some iron on the other so that the scale is
balanced. The water is then removed. What becomes true?
A) The side with the iron has more weight
B) The scale continues to be balanced
C) The side with the lead has more weight
A hint is available, as well as the solution.
The trick to solving this puzzle using your common sense is to exaggerate the density difference between the two materials. Instead of lead and iron, use lead and salt water. This makes no difference in the weighing experiment because in both cases, lead is the denser material.