Question

The figure below shows some identical triangles. How many unshaded triangles must be removed so that 2/3 0f the figure is shaded

Answer 1

Answer:

1 and a half

Step-by-step explanation:

2/3 x = 9

x = 9 * 3/2

x = 13.5

subtract:

15 - 13.5 = 1.5