SOLUTION: A Standard rectangular highway billboard sign has a perimeter of 124 ft. The lenght is 6ft more than three times the width. Find the dimensions of the sign.

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Question 276720: A Standard rectangular highway billboard sign has a perimeter of 124 ft. The lenght is 6ft more than three times the width. Find the dimensions of the sign.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
2L+2w=124
L=3W+6
2(3W+6)+2W=124
6W+12+2W=124
8W=124-12
8W=112
W=112/8
W=14 ANS. FOR THE WIDTH.
L=3*14+6
L=42+6=48 ANS. FOR THE LENGTH.
PROOF:
2*48+2*14=124
96+28=124
124=124