The total cost of flooring a rectangular room at ₹8.50 per sq. metre is ₹510. If the length of the room is 8 m, what is the breadth?
7.5 m
Given, Total cost = ₹510
and length of room is 8 m.
Area of the room is, =5108.5=60 m2
Also, the room is a rectangle
∴ area of rectangle, A=l×b
⇒8×b=60
⇒b=7.5 m