Question

If the perimetre of a rectangle is 35cm and its lenght and breadth are in the ratio 3:2 find the length and breadth of the rectangle

Answer 1

let the length be 3x and breadth be 2x
perimeter of rect. =2(l+b)
35=2*5x
35=10x
x=3.5

length=10.5
breadth=7

Answer 2

let the length and breadth be x
so,l =3x and b =2x
perimeter =2(l+b)
35 =2(3x+2x)
35 =2(5x)
35 =10x
35/10 =x
7/2 =x
x =3.5
l=3*3.5=10.5
b=2*3.5=7