SOLUTION: the breadth of a rectangle is one third of its length if its perimeter is 80 metres. what is its length?

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Question 271146: the breadth of a rectangle is one third of its length if its perimeter is 80 metres. what is its length?
Answer by Greenfinch(383) About Me  (Show Source):
You can put this solution on YOUR website!
If breadth is x, length is 3x, perimeter is 8x
So breadth is 80/8x = 10 metres, and length is 30 metres