Hello I got 3.50 but I do not think it is correct.

Question 24 (1 point) Consider a manufacturing process depicted by the following flowchart. Station A has 3 parallel operators, A1, A2, and A3. Station C has 2 parallel operators, C1 and C2. Each unit only needs to be processed by one of the operators A1, A2 and A3. After being processed at Station B, a unit then needs to be processed by either C1 or C2. The process time of the individual operators are given as follows. A1, A2, and A3: 18 minutes B: 13 minutes C1 and C2: 2 minutes. The process initiates the production of a new unit every 29 minutes. What is the utilization of Station B in percentage? Note: Provide a number without the % mark. Round your final answer to 2 decimal places if it is not a whole number. For example, if your answer is 71.723%, enter 71.72