Company X manufactures 2 products (tapes and stickers) from a joint process. Tapes are allocated $7500 of the total joint costs of $25,000. There are 2500 tapes produced and 2500 stickers produced each year. Each tape can be sold at the split-off point for $10 per unit, or they can each be processed further into a larger tape for total additional processing costs of $8400 and sold for $19 for each large tape. If the tapes are processed further and made into large tapes, the effect on operating income would be