Upton Company produces two main products and a by-product out of a joint process. The
ratio of output quantities to input quantities of direct material used in the joint process
remains consistent from month to month. Upton has employed the physical-volume
method to allocate joint production costs to the two main products. The net realizable
value of the by-product is used to reduce the joint production costs before the joint costs
are allocated to the main products. Data regarding Upton’s operations for the current
month are presented in the chart below. During the month, Upton incurred joint production
costs of $2,520,000. The main products are not marketable at the split-off point and, thus,
have to be processed further.