Answer:
Step-by-step explanation:
It seems there might be some confusion in the information provided. The formula for calculating the incidence percentage is not clear from the given details. However, if we assume that the incidence percentage is calculated based on the total factors (slow cycle + fast cycle), you can use the following formula:
\[ \text{Incidence Percentage} = \left( \frac{\text{Number of Slow-Cycle Factors}}{\text{Total Number of Factors}} \right) \times 100 \]
Using the provided information:
\[ \text{Incidence Percentage} = \left( \frac{120}{120 + 80} \right) \times 100 \]
\[ \text{Incidence Percentage} = \left( \frac{120}{200} \right) \times 100 \]
\[ \text{Incidence Percentage} = 0.6 \times 100 \]
\[ \text{Incidence Percentage} = 60\% \]
So, based on the assumption mentioned, the incidence of slow-cycling factors is 60%. Please verify the context and formula to ensure accuracy.