Question

The length of a room is 5/2 times of its breadth if the perimeter of the room is 70 metres then the length of the room is

Answer 1

Answer:

length is 10m

Step-by-step explanation:

let length be x

let breadth be y

perimeter = 2(length+breadth)

perimeter =2(x+y) ----(1)

give length*(5/2)=breadth

therefore 5x/2=y

substituting value of y in (1)

perimeter =70=2(x+(5x/2))

lcm is 2

70=2((2x+5x)/2)

70=2*(7x/2)

cancelling 2

70=7x

70/7=x

10=x

thus length is 10m