Sam is tiling a floor. He will use the same repeating pattern for the entire floor. The rule is "Blue Tile, White Tile, Black Tile." If he uses 85 tiles, how many will be black? Enter your answer in the box. (1 point)
The pattern consists of 3 tiles: blue, white, and black. Since the pattern repeats, every 3 tiles will contain 1 black tile.
To find the number of black tiles in 85 tiles, we divide 85 by 3 and take the remainder:
85 รท 3 = 28 remainder 1
This means that after 28 sets of the pattern, there is 1 tile left. Since the first tile of the pattern is blue, and the second tile is white, the remaining tile must be black.
Therefore, in 85 tiles, there will be 1 black tile.