A shopkeeper earns a profit of Rs. 1 by selling one pen and incurs a loss of 50 paise per pencil while selling pencils of her old stock. In a particular month she incurs a loss of Rs.15. In this period, she sold 40 pens. How many pencils did she sell in this period?
Answers
Profit earned by selling 1 pen = Re 1
Profit earned by 40 pens = Rs. 40, which we denote by + Rs. 40
Total loss given = Rs. 15, which we denote by Rs -15.
Profit earned + Loss incurred = Total Loss
Therefore, loss incured = Total Loss - Profit earned.
= Rs. (-15-40)
=Rs. (-55)= -5500 paise
Loss incurred by selling one pencil = 50 paise, which we write as -50 paise.
So, number of pencils sold = (−5500)÷(−50)=110 pencils.
ANSWER:
110 pencils.
STEP BY STEP EXPLAINATION:
Profit earned by selling 1 pen = Rs 1
Profit earned by 40 pens = Rs. 40, which we denote by + Rs. 40
Total loss given = Rs. 15, which we denote by Rs -15.
Profit earned + Loss incurred = Total Loss
Therefore, loss incured = Total Loss - Profit earned.
= Rs. (-15-40)
=Rs. (-55)= -5500 paise
Loss incurred by selling one pencil = 50 paise, which we write as -50 paise.
So, number of pencils sold = (−5500) ÷ (−50)=110 pencils.