Rohit earns profit of Rupees 1 by selling one pen and suffers a loss of 50 paise by selling one pencil. one day Rohit earns rupees 5. if he sold 25 pens, how many pencils did he sell?
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pen sell- 1Rs
pencil sell- -50 paise
earns- 5Rs
-20 Rs from pencil
40 pencil sold
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