SOLUTION: A rectangle's length is 12 in. less than 3 times its width. Find the set of all the possible widths given that the perimeter must be less than 48 in.

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Question 357211: A rectangle's length is 12 in. less than 3 times its width. Find the set of all the possible widths given that the perimeter must be less than 48 in.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
let width be x
length = 3x-12
((3x-12)+x)*2 <48
(8x-24<48)
add 24
(8x-24+24<48+24)
(8x<72)
...
(x<9)
m.ananth@hotmail.ca
..