Sheet2ProfitRs.800Acquisition costRs.2000Expected Years in Bank10Attrition Rate0.1Retention Rate0.9Discount Rate0.1ProfitableYear012345678910Profitability-2000800800800800800800800800800800Survival Probability10.90.810.7290.65610.590490.5314410.47829690.430467210.3874204890.3486784401Expected Profitability-2000720648583.2524.88472.392425.1528382.63752344.373768309.9363912278.94275208NPV Factor10.90909090910.8264462810.75131480090.68301345540.62092132310.56447393010.51315811820.46650738020.42409761840.3855432894NPV-2000654.5454545455535.5371900826438.1667918858358.500102452293.3182656426239.9876718894196.3535497277160.6529043226131.4432853549107.5445061994Cumulative NPV-2000-1345.4545454546-809.9173553719-371.7505634861-13.2504610341280.0678046085520.0554764978716.4090262255877.06193054811008.5052159031116.0497221025The following need to be considered as expenses, and accounted for in calculating the profitability for that periodMarketing costs: Advertising costs, promotions, etcCosts incurred for maintaining customers