Question

the length of a rectangle is 27 m longer than its breadth.If it's perimeter is 270 m .Find it's breadth .

Answer 1

let the breadth be x

length is x+27

P=2(l+b)
270=2(x+x+27)
270/2=2x+27
135=2x+27
108=2x
54=x

the breadth is 54m
length=54+27=81m
  

Answer 2

Let breadth be 'x'
Then length = (x + 27)
Perimeter = 2(l + b)
270 = 2( x + 27 + x )
135 = 2x + 27
135 - 27 = 2x
108 = 2x
x = 108/2 = 54m
Breadth of rectangle = 54m
Length of rectangle
= 54 + 27 = 81m