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Dear Student,

Given : Mr. Durani bought a land for Rs 180000 and the value of land grows uniformly by 30 % per annum .

We know formula for compound interest :  Amount =  P , So

Cost of land after three years = 180000 = 395460

And

Mr. Durani also bought a car for Rs 320000 and the value of car depreciates 20 % for first year and 15 % thereafter

We know formula for compound interest when we have succesive rate that are depreciates   :  Amount =  P , So

Cost of car after three years = 320000 = 184960

Then,

Mr . Durani gets total profit of loss in all transiction  =  395460 + 184960 - 180000 - 320000 = 80420 ( That is positive so Mr . Durani gets profit )

Therefore,

Total profit Mr. Durani gets  =  Rs . 80420                                                                       ( Ans )