Question

6. A shopkeeper earns a profit of 1 by selling one pen and incurs a loss of 40 paise per pencil
while selling pencils of her old stock.
) In a particular month she incurs a loss of 5. In this period, she sold 45 pens. How many
pencils did she sell in this period ?
i) In the next month she earns neither profit nor loss. If she sold 70 pens, how many pencils
did she sell ?​

Answer 1

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.