"I NEED ONLY CLEAR MANUAL STEP WISE SOLUTION FOR THIS QUESTION.....ANY SORT OF CODE OR PSEUDO CODE IS NOT AT ALL REQUIRED."

I WOULD REALLY APPRECIATE IF YOU STRICTLY ADHERE TO THE ABOVE MENTIONED THING......

2. A car factory having two assembly lines having costs (entry and exit costs, cost at each station and transfer cost from one line to other) as shown in figure below. Calculate the fastest time to get through the entire factory and trace the path a car should take for fastest production