Question

Andy is hanging wallpaper in his kitchen. He is able to cover of the walls in the room using 6 rolls of wallpaper. What is the number of rolls of paper used per wall?

Answer 1

case 1 : considering only 4 walls , the no of rolls are 1.5.
case 2: considering the roof also , the no of rolls are 6/5.

Answer 2

Given:

Andy covers all the walls of his kitchen using 6 rolls of a wallpaper.

To Find:

Number of rolls used per wall.

Solution:

Since, we know that the shape of a kitchen is a cuboid.

And a cuboid has total 6 faces, with 4 walls, one roof and one floor.

So, total number of walls in Andy's kitchen = 4

Now, it is given that he uses 6 rolls of wallpaper to cover 4 walls completely.

In order to find the number of rolls used per wall, we'll have to divide the total number of rolls used with the total number of walls.

Number of rolls used per wall = $\dfrac{Total \ number \ of \ rolls \ used }{Number \ of \ walls}$

                                                  $= \dfrac{6}{4} = \dfrac{3}{2} = 1.5 \ rolls$

So, 1.5 rolls are used to cover one wall.