Question

The total cost of flooring a rectangular room at rupees 13 per square metre is rupees 819 if the length of the room is 9 metre find its breadth

Answer 1

Step-by-step explanation:

Area of room = cost of flooring/ rate of flooring

= 819/13

= 63 m^2

length of room= 9 m

let be the breath =x m

area of room = l×b

= 9×x

= 9x

Now, 9x = 63

x= 63/9

x = 7 m

Hence breath of room = 7 m