Take the breadth as x,as its the smallest value--(1)
Length is 2 more than 5 times the breadth--(2)
perimeter=160m
l=2+5x
b=x
Perimeter=2(l+b)
2(2+5x+x)
=2(2+6x)
Opening the brackets
=4+12x
4+12x=160
12x=160-4
x=156/12
=13
Therefore , by substituting the value of x
l=2+5*13=67m
b=13m