Question 357341
F=3S
T=F-23
******* 
F+S+T=490
(3S)+S+(3S-23)=490
7S=490+23
7S=513
S=513/7
S=73.286 IS THE SECOND PIECE.
F=3*73.286=219.857 IS THE FIRST PIECE.
T=219.857-234=196.857 IS THE THIRD PIECE.
PROOF:
219.857+73.286+196.857=490
490=490