Answer:
A model with 4 shaded sections and 6 unshaded sections.
A model with 40 shaded sections and 60 unshaded sections.
Step-by-step explanation:
Required:
Which models shows 40%
(a) 4 shaded and 6 unshaded
First, we calculate the total sections


The percentage of the shaded section is:



(b) 40 shaded and 60 unshaded
First, we calculate the total sections


The percentage of the shaded section is:



(c) 2 shaded and 8 unshaded
First, we calculate the total sections


The percentage of the shaded section is:



<em>Hence, (a) and (b) shows 40%</em>