If: 4. Very picky Paula Perkins requests a tile floor from Miriam.

She also wants the alternating black, white, and gray tile

pattern; however, she wants the outer edge of the tile to match

her wall color. The room is 101 feet by 101 feet and the wall color

is white. What color must the center tile be to ensure the outer

edge is white? Show or explain your work.

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Following are the solution to this question:

Step-by-step explanation:

An alternative black, white, and grey design of the tile is also desired. She needs her color scheme to suit the top boundary of the tile. Therefore, the central tile paint should be grey to ensure a white top boundary. To ensure, that perhaps the outer end is white, the color of the center tile shall be dark.

answer: 21$

step-by-step explanation:

$42 / $14 = 3   (ratio 3: 1)

$7 x 3 = $21