Question

A shopkeeper earns a profit of rs. 1 selling 1 pen and incurs a loss of 40 paise per pencil while selling pencils .In a particular month he incurs a loss of rupees 5 .In this period he sold 45 pens.How many pencils did he sell in this period. give a correct or suitable solution

Answer 1

he earns profit of Rs.1 by selling one pen

And looses 40 paise/pencil by selling one pencil.

1.

loss in the particular month=Rs.5

The no.of pen sold 45 pens

profit=45*1=45/-

Therefore total loss that month =45+5=50/-

loss by selling one pencil=paise 40=Rs.0.40

thefore no.of pencil sold that month =50/0.4=500/4=125

thus he sold 125 pencils that month

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since he sold

Answer 2

Profit per pen = re.1
profit for 45 pens = rs.45
if profit is always in positive then loss for the month is -5
so 45+x = -5
x = -50
so the loss is -50
pencils sold = (50/0.40)
                  = 125