Its worth trying drawing circles and triangles to find the correct one.
If you do you'll find that the answer is B.
10 slices = 100%
Each of three people had 3 slices; 3 * 3 = 9
9 slices = 90%
Sally and her two friends ate 90% of the pizza.
Hope this helps.
U mean percent decrease?
If so, the answer would be about 13.06 percent I think
Points that lie on the same line are called collinear
