SOLUTION: The perimeter of a rectangular picture frame is 80 centimeter. Two times the width is equal to the length increased by five. Find its dimensions.
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Question 1008387: The perimeter of a rectangular picture frame is 80 centimeter. Two times the width is equal to the length increased by five. Find its dimensions.
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Perimeter P = 2L + 2W = 80. We also have
2W = L + 5 or
L = 2W - 5
Now substitute this onto the first equation...we get
2(2W - 5) + 2W = 80
4W - 10 + 2W = 80
6W - 10 = 80
6W = 90
W = 15 cm
L = 2(15) - 2 = 25 cm
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