Question

the perimeter of a rectangular swimming pool is 154m.Its length is 2m more than twice it's breadth. what are the length and breadth of the pool

Answer 1

Given, perimeter is 154m.
Let breadth be 'x' m
Then, Length = (2+2x)m
We know that ,
Perimeter of a rectangle =2(l+b)
154 =2× (2+2x+x)
154/2= 2+3x
77m=2+3x
75m=3x
x=75/3
x=25m
Length =2+2x = 2+ 50 =52m
Breadth= x=25m....

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Answer 2

Let breadth be and length be (2x + 2) m,

According to the question,

Perimeter = 2(length + breadth)
154           = 2(x + 2x + 2)
154/2        = 3x + 2
77             = 3x + 2 
77 - 2        = 3x 
75             = 3x 
75/3          = x 
25             = x 


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Breadth = x = 25 m
Length = 2x + 2 = 2(25) + 2 = 50 + 2 = 52m



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