Question

The length and breadth of a rectangular field are in ratio 6:4 find the length and breadth if the cost of fencing the field at the rs 80per meter is rs 1600

Answer 1

Answer:

1m - rs 80

?m = rs 1600

?m = 1600/80

     = 160/8

    = 20m (perimeter)

Ration = 6:4

So...

perimeter = 2(l+b)

2(6x+4x) = 20m

=>12x+8x = 20m

=>20x = 20m

=>x=20/20

=> x = 1m

length = 6x1

          = 6m

breadth = 4x1

              = 4m

hope this helps