Question

tina, troy and nate had a total of 25 equal-sized square tiles to place over a square grid. Tina used 8/25 of the square tiles. Troy used 1/5 of the square tiles. what fraction of the square grid must Nate place the tiles on so that 1/5 of the square grid is not covered.

Answer 1

8/25 + 1/5 + x = 4/5
X = 4/5 - 8/25 - 1/5=20/25 - 8/25 - 5/25
= 20/25 - 13/25 = 7/25 of the grid for
Nate.