Delisha is putting backsplash tiles in her kitchen. The wall area where she plans
to place her tiles is 40 inches by 20 inches. The tiles are four inches by four
inches. She plans to buy 10% extra to be safe. How many tiles should she buy?
in terms of tiles, the area is 10x5
So, 50 tiles + 10% = 55 tiles
40*20/4*4 = 800in^2/16^2 = 50 tiles required.
50+0.1*50 = 55 tiles bought.
To find out how many tiles Delisha should buy, we need to follow these steps:
Step 1: Calculate the area of the kitchen wall
The area of the kitchen wall is given as 40 inches by 20 inches, so we can find its total area by multiplying: 40 inches * 20 inches = 800 square inches.
Step 2: Calculate the size of each tile
The tiles are four inches by four inches, so the total area of one tile is: 4 inches * 4 inches = 16 square inches.
Step 3: Calculate the total number of tiles needed without the extra 10%
To find out how many tiles are needed without the extra 10%, divide the total area of the kitchen wall by the area of one tile: 800 square inches / 16 square inches = 50 tiles.
Step 4: Calculate the extra 10% of tiles
To determine the extra 10% needed, multiply the total number of tiles by 0.10 (10%): 50 tiles * 0.10 = 5 tiles.
Step 5: Calculate the total number of tiles with 10% extra
To find the total number of tiles with the 10% extra, add the extra tiles to the total number of tiles needed without the extra: 50 tiles + 5 tiles = 55 tiles.
Therefore, Delisha should buy 55 tiles.
To find out how many tiles Delisha should buy, we need to calculate the total number of tiles required to cover the wall area, including the extra 10%. Here's how we do it:
Step 1: Calculate the area of the wall
The wall area is given as 40 inches by 20 inches. To find the area, multiply the length and width:
Area of the wall = 40 inches * 20 inches = 800 square inches
Step 2: Calculate the area of one tile
The tiles are four inches by four inches, so the area of one tile is:
Area of one tile = 4 inches * 4 inches = 16 square inches
Step 3: Calculate the total number of tiles required
To find the total number of tiles, divide the area of the wall by the area of one tile, and then multiply by 1.10 (to add the 10% extra):
Total number of tiles = (Area of the wall / Area of one tile) * 1.10
Substituting the values we have:
Total number of tiles = (800 square inches / 16 square inches) * 1.10
Total number of tiles = 50 * 1.10 = 55
Therefore, Delisha should buy 55 tiles in order to cover her kitchen backsplash area with 10% extra.