A book seller purchased 800 copies of book for Rs 4400.He sold 600 copies at the profit of 20% and the remanning at the loss of 25.Find the total % of loss or gain of the whole transcation
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then CP of 1 copy of first 600 =Rs.4400/800
SP of 1 copy =(120/100)×(4400/800)=Rs.6.6
SP of 600 copies = 6.6×600=Rs.3960
then SP of last 200 pencils = (75/100)×6.6×200
=Rs.990
so total SP = 990+3960=4950
profit=550
profit%=(550/4400)×100=12.5%
SP of 1 copy =(120/100)×(4400/800)=Rs.6.6
SP of 600 copies = 6.6×600=Rs.3960
then SP of last 200 pencils = (75/100)×6.6×200
=Rs.990
so total SP = 990+3960=4950
profit=550
profit%=(550/4400)×100=12.5%
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