Question

Mr Mohanlal purchased a plot for
constructing his new house. The length
and breadth of the plot are in the ratio
12:5. At the rate 100 per metre it cost
him 68,000 to fence the plot. Find the
dimensions of the plot?​

Answer 1

Answer:

length =240

breadth =100

Step-by-step explanation:

let the common factor of the given ratio be x

perimeter=2(l+b)

=2(12x+5x)

=34x

atq Rs68000=34x x 100

=) x= 680/34

=) x= 20

Answer 2

Let the length=12x

and its breadth=5x

A/Q, 68000/100=2(12x+5x)

→680=24x+10x

→680=34x

→680/34=x

→20=x

→x=20

The length=12x

=12×20

=240m

and the breadth=5x

=5×20

=100m