Question

The perimeter of a retangle is 320cm.if the ration of the lenght of the sides is 3:5,find the lenght and breath of the rectangle

Answer 1

5x+3x=320
8x=320
x=320/8

Answer 2

let the length and breadth be 3x and 5x.

then according to question

2(3x+5x)=320

6x+10x=320

16x=320

x=20 cm

3x=60 cm

5x=100 cm

therefore length and breadth are respectively 100 cm and 60 cm