The Total cost of flooring a room at Rs.8.50 per square meter is Rs.510. If the length of the room is 8km it’s breadth is__________?

Cost of flooring per square meter = Rs.8.50

Total cost of flooring of room = Rs.510

Area of the room = 510/8.50
Area of the room = 60m²

Area of the room = l×b
60 = 8×b
b = 60/8
​
b =7.5m

Breadth of the room is 7.5m