A WEIGHTY NEW CHALLENGE

Here's a really tough puzzle originally published by Sam Lloyd (1841-1911), one of America's greatest puzzle makers.  This challenge will close at 0730 29 April.  Good luck.

The Puzzle: The five school children in couples weigh 129 pounds, 125 pounds, 124 pounds, 123 pounds, 122 pounds, 121 pounds, 120 pound, 118 pounds, 116 pounds and 114 pounds on a weighing machine. What was the weight of each one of the five little girls if taken separately?