Question

A shopkeeper earns a profit of 1 by selling one pen and earns a loss of 30 paise on sale of one pencil. In a particular month, he incurs a loss of 5. In that month, he sold 40 pens. How many pencils did he sell in that period?​

Answer 1

Answer:

150 Pencils he sold in this period.

Step-by-step explanation:

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. 5, which we denote by Rs (- 5.)

Total Loss = Profit earned + Loss incurred  

Therefore,

Loss incurred = Total Loss - Profit earned.

                       = Rs.  [ - 5 - 40 ]

                       = Rs. -45

                       =  -4500 paise                

Loss incurred by selling one pencil = 30 paise,

which we write as -30 paise.

So, number of pencils sold = (−4500 ) ÷ (−30)

                                             = 150 pencils.