Question: There are four stations in a process: Station-1, Station-2, Station-3, and Station-4. They process a single product. The flow of the accepted and rejected products
There are four stations in a process: Station-1, Station-2, Station-3, and Station-4. They process a single product. The flow of the accepted and rejected products are shown in the process flow chart.
The total volume of production is 93 products per hour. 18% of the products of Station-1 need repair and are directed to Station-3 for repair, the rest are sent to Station-2. 17% of the products of Station-2 need repair and are directed to Station-3 for repair, the rest are sent to Station-4. 13% of the incoming products of Station-3 are rejected, are sold at a low price, and leave the process. The rest go to Station-4. All the products of Station-4 are good, no need to repair, and no rejection. On average there are 4, 3, 33, and 5 products in Stations 1, 2, 3, 4, respectively.
Compute the average flow time in this process. Enter your answer in MINUTES with ONE DECIMAL point.

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