Question

There is a rectangular plot in a Secondary School the ratio of length and breadth of a plot is 3 ratio 5 if cost of fencing of the plot at rupees 50 per metre is rupees 5600 find the dimensions of the plot

Answer 1

Let length=3x
b=5x
Perimeter=2(l+b)
=2(8x)
Cost is 5600
(16x)50=5600
800x=5600
x=7
Length=3*7=21
b=5*7=35