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  • A shop keeper earns a profit of rs 1 by selling a pencil and a lost of rs 20 paise by selling an eraser.(1) in a given day he had a loss of rs 10 on this day he sold 35 pencil.how many eraser sold on this day.(2) next day he earned a profit of rs 25 on t

A shop keeper earns a profit of rs 1 by selling a pencil and a lost of rs 20 paise by selling an eraser.(1) in a given day he had a loss of rs 10 on this day he sold 35 pencil.how many eraser sold on this day.(2) next day he earned a profit of rs 25 on this day he sold 100 eraser how many pencil did he sell?

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eginarrayl ext(i) let no. of eraser sold be x\ exttotal loss=rs10\ 10=loss by eraser-profit by pencil\ 10=(0.10x)-(35 imes1)\ 10=0.10x-35\ 45=0.10x\ x=450\ extso 450 erasers were sold that day\ \ ext(ii) let no. of pencil be y\ exttotal profit=rs 25\ 25=profit by pencil-loss by eraser \ 25=(1 imes y)-(100 imes0.10)\ 25=y-10\ 35=y\ extso 35 pencils were sold that dayendarray

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Deependra Verma

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