I was thinking about creating some riddle for TED-ED and somehow I came up some math riddle something like that:
"A group of seven creatures weights together 1000 kg, the largest one and
second smallest one weights same as one larger than smallest one and second one smaller than largest one, 3 largest ones weights same as 4 smallest ones, some one of the 3 largest ones is half heavier than 4th one, who is half heavier than some one of the 3 smallest ones.
How heavy each creatures weights?
Which two of them don't have identical weights. All seven creatures have different weights."
edit: Should I fix that first hint with something large creature named "Abe" (first or second largest) + small one named "Bibb" (first or second smallest) = second or third largest <"Abe" + second or third smallest >"Bibb"
And third hint as one of the smaller ones are quarter lighter than some creature called "Seymour", but one the larger one is half heavier than "Seymour", does it makes bit different?
Sorry about that mistake for that first hint