How to Solve This Investment Puzzle (Step-by-Step Reasoning)
- From clue #3, GOOG increased by 5%.
- From clue #4, the $20 stock increased by 45% and is not TWX.
- From clue #5, IBM was purchased at $40. Since clue #2 says the $50
stock lost money, IBM (at $40) must have increased by 25%.
- Clue #2 says both WMT and the $50 stock lost value. From clues #1 and
#2, WMT could not be the $30, $20, or $50 stock—it was bought at
$10 and lost 35%.
- The $50 stock lost 15%, so TWX (which isn’t the $20 stock per clue #4) was bought at $50 and lost 15%.
- By elimination, GOOG was purchased at $30.
- That leaves BSC as the $20 stock that gained 45%.
