Question

If the ratio between the length and perimeter of a rectangular plot 1:3,then the ratio between the length and breadth of the plot is and write correct answer class6

Answer 1

Let length be 1x and perimeter be 3x.
perimeter of rectangle = 2(l+b)
3x = 2(x+b)
3x = 2x + 2b
3x - 2x = 2b
x = 2b
x\2 = b
Ratio of length and breadth = length\ breadth
x\(x\2)
x×2\x
ratio is 2: 1.