the product from level 1 to level n, crude demand in period t equals the total demand dependent (for manufacturing) and independent demand (direct selling in the market) in States that:BBT = BB (pt) t + BB (DL) t Where: BB (pt) t crude demand Is dependent on States tBB (DL) t is independent demand in the period tIndependent needs are determined by forecasting the customer. Dependent demand is calculated according to the formula as well:Where: Qsxti is the number of products i put into production in the period t
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