ILLUSTRATION 18 An article undergoes three successive operations from raw material to finished product stage. Following information is available from the production record of a particular month. Operation No. No. of pcs. input No. of pcs. rejected No. of pcs. output 1 12,000 4,000 8,000 N 13,200 1,200 12,000 3 3 9,600 1,600 8,000 Find out what should be the input in the first operation in no. of pieces to obtain a finished product of 100 pieces after the last operation. Calculate the cost of raw material required to produce one piece of finished product from the following particulars : Weight of the finished piece-100 gm. Per piece; Price of raw material-$10 per kg