Question

the cost of carpeting a room 15m long with a carpet of width 75m at ₹80 per meter is ₹19200.find the width of the room?

Answer 1

let area to be carpeted be x m²
let width be w m
area of floor=length*width
area =15*w
total cost=19200
area of room=19200/80
=240m²
240m²=15*w
w=240/15
w=16m