Question

the cost of carpeting a room 15 m long with a carpet of width 75 cm at Rs 80 per metre is Rs 19200. find the width of the room.

Answer 1

Width of the carpet = 0.75m
Let the length of carpet be x
80 * x = 19200
       x  = 19200/80 
           = 240 cm 

Area of carpet = length * width
                        = 180m²

Let width of room be b.
Area to be carpeted = 15 * b
                         180  = 15 * b
                             b  = 180/15
                                 = 12 m

Therefore, the width of the room is 12 m.

Answer 2

Length of the room = 15 m

width of the carpet = 0.75 m

cost per meter = Rs 80

total cost = Rs 19200

let length of the carpet be x

80x = 19200

x=19200/80=240 cm

area of carpet=length * breadth

                        =    0.75 * 240

                        =      180 m^2  ( now let width of the room be y)

15 m * y = 180 cm^2

               y = 180/15

                   = 12 m

       LENGTH = 15 M                                        BREADTH = 12 M

                                   

                          PLS MARK AS BRAINLIEST ........