Question

the perimeter of a rectangular swimming pool is 154m.its lenght is 2 m more than twice it's breath.what is the length and breadth of the pool?

Answer 1

here l=2b+2 and b=b then

using the formula
2b+2+b=154m then
perimeter of rec =2(l+b)
2(2b+2+b)=154
then ans = 4b+4+2b=154
6b=150 then b=25 and l=2b+2 then 52

Answer 2

Perimeter =2(l+b)
Let breadth be x
Length = (2x)+2
154=2[(2x+2)+(x)]
154/2=[(2x+2)+(x)
77=(2x+2)+(x)
77=3x+2
77-2=3x
75=3x
x=75/3
x=25
Therefore the breadth is 25m
Length=2b+2
(2*25)+2
50+2
52
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