# A vendor bought oranges at 20 for Rs.56 and sold them at Rs.35 per dozen. Find his gain or loss per cent.

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loss%=loss/c.p*100

as he bought 20 for 56, one orange =56/20=2.8

he sells 12 for 35 ,so one orange=35/12=2.9

so profit = sell-bought=2.9-2.8=0.1

so the profit is 0.1 for one orange

for 12 orange profit is 12*0.1=0.12

profit percentage=0.12/35*100=0.35

therefore the profit percentage is 0.35%

so, C.P of 1 orange = 56/20 = 2.80

S.P of dozen oranges = 35

so, S.P of 1 orange = 35/12 = 2.92

since, S.P>C.P

Profit = S.P - C.P= 2.92-2.80= 0.12

Profit %= (profit/C.P )* 100%

=(0.12/2.80)*100%

=(12/280)*100%

=4.29%