A shopkeeper earns a profit of re 1 by selling one pen and incurs a loss of 40 paisa per pencil while selling pencils of her old stock.
(i) In a particular month she incurs a loss of Rs 5. In this period, she sold 45 pens. How many pencils did she sells in this period?
(ii) In the next month she earns neither profit nor loss. I she sold 70 pens, how many pencils did she sell?
THIS QUESTION IS IN NCERT BOOK IN PAGE 25 WITH SOLUTION BUT I CAN'T UNDERSTAND IT.....PLEASE MERITINATION EXPERT MAKE ME UNDERSTAND IT VERY PROPERLY SO THAT I HAVE NO CONFUSION
(i) Overall Profit Or Loss = -5
45 Pens means Profit Of Rs 45
Now No Of Pencils Sold
Price Of Pencils => 45-(-5) = Rs50
So She Sold Pencils At a loss of rs 50
No OF pencils = 50/0.40 = 125
So She Sold 125 pencils.
(ii) Profit Or Loss Incurred = 0
Now 70 pens means profit of Rs 70
Now Cost Price Of Pencils = 70-0 = 70
No of pencils = 70/0.40 = 175
So She Sold 175 pencils.
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