SOLUTION: A television picture tube is 9cm longer than it is wide. If the perimeter of the tube is 142cm, what are the length and width of the tube?

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Question 471236: A television picture tube is 9cm longer than it is wide. If the perimeter of the tube is 142cm, what are the length and width of the tube?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
2w+2(w+9)=142
4w+18=142
4w=124
w=31
l=40
The "tube" is 40 cm. by 31 cm..