Answer:
Model 1 represents 85% shaded area.
Step-by-step explanation:
Here, each model consists of equal sized rectangles.
Please refer to attached figure to know the model number.
Model 2 (on top right of question figure) contains a total of 20 such rectangles out of which 13 are shaded. As per formula of percentage:
[tex]\text{Percentage of shaded area} = \dfrac{\text{Number of shaded rectangles}}{\text{Total number of rectangles}} \times 100\\\Rightarrow \dfrac{13}{20}\times 100 = 65\%[/tex]
Model 3 (on bottom left of question figure) contains a total of 16 such rectangles out of which 10 are shaded. As per formula of percentage:
[tex]\text{Percentage of shaded area} = \dfrac{10}{16}\times 100 = 62.5\%[/tex]
Model 4 (on bottom right of question figure) contains a total of 16 such rectangles out of which 13 are shaded. As per formula of percentage:
[tex]\text{Percentage of shaded area} = \dfrac{13}{16}\times 100 = 81.25\%[/tex]
Model 1 (on top left of question figure) contains a total of 20 such rectangles out of which 17 are shaded. As per formula of percentage:
[tex]\text{Percentage of shaded area} = \dfrac{17}{20}\times 100 = 85\%[/tex]
Hence, model 1 is the correct answer.
