Question

A shopkeeper earns a profit of Rs.2 by selling a pen and a loss of Rs.1 by selling a pencil.


b. What is the number of pens that must be sold to have neither profit nor loss if the number of pencils sold is 1200?​

Answer 1

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.

Answer 2

Answer:

I think 300 for 1200 pens