Q) The Dewaxing operation in a petroleum refinery requires an equipment investement of 20,0000 with maintaince charges of 12,000 person. Money is 8% annualy \& 10 years ant. The equipment lite is 10 years and solvage value is 15,000. calculate book at the end of 5th year by sinking fund method? and cakulate at the end of 8th year by using sum of the digits method? What gross profit must be made for the first year before detecting depreciation and maintainence charges by both sinking fund method and straight line method? Q) In order to replace a distillation column in 10 years at a cost of 68,000. how mpuch must be placed in a sinking tund anually at 4% ? If atter syears, the column junk and solvage value equals to the dismantle cost. what additional sum is required to provide new column? if straight line depreciation has be used, what would be the additional sum. Q) The Dewaxing operation in a petroleum refinery requires an equipment investement of 20,0000 with maintaince charges of 12,000 person. Money is 8% annualy \& 10 years ant. The equipment lite is 10 years and solvage value is 15,000. calculate book at the end of 5th year by sinking fund method? and cakulate at the end of 8th year by using sum of the digits method? What gross profit must be made for the first year before detecting depreciation and maintainence charges by both sinking fund method and straight line method? Q) In order to replace a distillation column in 10 years at a cost of 68,000. how mpuch must be placed in a sinking tund anually at 4% ? If atter syears, the column junk and solvage value equals to the dismantle cost. what additional sum is required to provide new column? if straight line depreciation has be used, what would be the additional sum