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###
### Purpose: Compute EV
### started: 2015/09/25 (pvr)
###
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nNrCows <- 50
nMilkPerCow <- 7000
nMilkYear <- nNrCows * nMilkPerCow
nNetRevMilkPerKg <- 0.55
nCostPerMilkKg <- 0.45
nGainPerMilkKg <- nNetRevMilkPerKg-nCostPerMilkKg
### # total cost current situation
nTotCostCurrent <- nCostPerMilkKg * nMilkYear
nTotRevCurrent <- nNetRevMilkPerKg * nMilkYear
nTotGainCurrent <- nTotRevCurrent - nTotCostCurrent
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