Question

Q. A shopkeeper earns a profit of Rs.1 by selling one pen and incurs a loss of 40 paise per pencil while selling pencils of her old stock.

Answer 1

Answer:

C.p=cost price; s.p=selling price

c.p of pen=1

c.p of pencil=1

1)

loss =c.p-s.p

no. of pencil=x

s.p of pen=45*2=90 s.p of pencil=3/5*x

(45+x)-(90+3/5x)=5

45+2/5x-90=5

2/5x=50

x=125

2)

c.p=s.p

70+x=140+3/5x

2/5x=70

x=175