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29-03-2018
Mathematics

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A 31 foot board is cut in two pieces so that the longer piece is 1 foot less than three times the shorter piece

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29-03-2018

X is the short piece
(3•x-1)+x=31
4x=31+1
X=32/4=8

Short piece is 8
Long piece is 3•8-1=23

Check 8+23=31 ✔️

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