Question

Ahmed buys a plot of land for rupees 480000. He sells 2/5 of it at a loss of 6%. At what gain percent should he sell the remaining part of the plot to gain 10% on the whole???

Answer 1

Heya

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Cost of land = 480000

 sold 2/5 land and the amount he got = 480000 * 2/5
 
                                                                = 192000

Loss of 6% percent =  192000(1-6/100)

                                 = 192000(94/100)

                                 = 1920 * 94

                                 = 180480

To gain 10% profit  = 480000 * 1.1
            
                               = 528000

selling 3/5 of land = 528000 - 180480

                               = 347520

cost of remaining 3/5 land= 480000 * 3/5 = 288000

Gain % = 100 * (347520 - 288000)/288000 = 20.66