Question

Length and breadth of a rectangular field are given in the ratio 3:2. The cost of fencing the field at RS 6.50 per meter is RS 520. Find the dimensions of the field​

Answer 1

divide 520/6.5

then take ratio and ,cross multiply

Answer 2

given that cost of total fencing is 520.

and cost of fencing 1 meter square is 6.5

so area of rectangle =520/6.5=80 meter square.

now it is given that ratio of length and breadth is 3:2.

let l= 3x &b=2x

now area of rectangle =l*b=80

6x^2= 80

now x= √40/3

so l=3√40/3

and b=2√40/3