which model shows 60%?

Explanation:

Step1: Calculate percentage for first model

There are 8 parts in total, 5 are colored. The percentage is $\frac{5}{8}\times100% = 62.5%$.

Step2: Calculate percentage for second model

There are 10 parts in total, 6 are colored. The percentage is $\frac{6}{10}\times100% = 60%$.

Step3: Calculate percentage for third model

There are 10 parts in total, 5 are colored. The percentage is $\frac{5}{10}\times100% = 50%$.

Answer:

The second model.