Answer and Explanation:
Sales               = $175,000
Less: Cost           = $93,000
Gross Profit          = $82,000
Less: Depreciation    = $24,800
EBT Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = $57,200
Less: Tax Rate@23% Â Â = $13,156
EAT Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = $44,044
a). OCF = EBIT + Depreciation - Taxes
       = $57,200 + $24,800 - $13,156
       = $68,844
b). OCF = [(sales - costs - Depreciation) * (1 - T)] + Depreciation
       = [($175,000 - $93,000 - $24,800) * (1 - 0.23)] + $24,800
       = $68,844
c). OCF = [(sales - costs) * (1 - T)] + [Depreciation * T]
       = [($175,000 - $93,000) * (1 - 0.23)] + [$24,800 * 0.23]
       =  $68,844
d). OCF = Net income + depreciation
       = $44,044 + $24,800
       = $68,844