Question

The area of rectangle is 15 times of sum of its length and breadth if length is 40 m what is the perimeter of rectangle

Answer 1

given that

length of rectangle=40m

breadth of rectangle=k

and also

kx40=15(40+k)

40k=600+15k

25k=600

k=600/25

k=24

then perimeter,

2(40+25)

=130