During last month 20,000kg of material were input to a process. Losses are 5% were expected. Actual output were 18500kg and there is no opening or closing work in progress. Process cost for last month were $76380.
You must have an answer in the same book in which you found the question. You should ask about whatever it is in the answer that you are not clear about, and then I will help you.
The cost per kg is 76380 / (95% x 20000) = $4.02
This really is one of the simplest process costing questions that you could be asked. You should watch me free lectures because I work through the topic in detail, with examples.
The lectures are a complete free course for Paper F2 and cover everything needed to be able to pass the exam well.