A shopkeeper earns a profit of rs.1 by selling 1 pencil and a loss of 40paise by selling 1 pencil.
a) in a month he gets a loss of rs.5 , he sold 45 pen. how many pencils did he sell?
b)in the next month, he neither gets a loss nor profit. if he sold, 70pens how many pencils did he sell?
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Step-by-step explanation:
Profit earned by selling 1 pen = Re 1
Profit earned by 45 pens = Rs. 45, which we denote by + Rs. 45
Total loss given = Rs. 5, which we denote by Rs -5.
Profit earned + Loss incurred = Total Loss
Therefore, loss incured = Total Loss - Profit earned.
= Rs. (-5-45)
=Rs. (-50)= -5000 paise
Loss incurred by selling one pencil = 40 paise, which we write as -40 paise.
So, number of pencils sold = (−5000)÷(−40)=125 pencils.
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