Question

shopkeeper earns a profit of ₹ 2 by selling one pen and incurs a

loss of 50p per pencil while selling pencils of her old stock.


a) In particular month she incurs a loss of ₹ 10. In this period she sold

45 pens. How many pencils did she sell in this period.


b) In the next month she earns neither profit nor loss. If she sold 80

pens, how many pencils did she sell?


Please answer it is very urgent please

Intervellet answer reported
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Answer 1

Answer:

and by selling a pencils, he loses 50 paise

and an eraser, he loses 15 paise

On one day, he gain =Rs.10

On that day he sold 10 pens and pencils and erasers in the ratio of 7:10

On ten pens, his gain =10×2=Rs.20

loss on pencils and erasers =Rs.20−Rs.10=Rs.10=1000 paise

Ratio in pencil and eraser =7:10

Let number of pencils =7x, then eraser =10x

7x×50+10x×15=1000

⇒350x+150x=1000

⇒500x=1000

⇒x=2

Numbe rof penciles =7×2=14

and number of erasers =10×2=20

Answer 2

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