A shopkeeper earns a profit of Rs.1 by selling one pen and incurs a loss of 50 paisa per note book
for selling note book of old stock.
1. In a particular month, he suffers a loss of Rs. 75. In this period he sold 50 pens. How many
Note books did he sell in this month?
2. Next month, he earned a profit of Rs.125 and sold 200 pens. How many notebooks did he sell this
month?
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Answer:
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.
Step-by-step explanation:
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