22.A shopkeeper incurred a loss of 40 paise on selling a pencil and a profit of Re 1
on selling a pen. On a particular day he sold 50 pencils and some pens.The net
profit was Rs 50.Find the number of pens sold.
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i) Loss = Rs 5
Profit gained by selling one pen = Re. 1
Profit gained by selling 45 pens = Rs 45
45 + x = - 5
x = - 50
So, a loss of Rs 50 has occurred while selling pencils.
No. of Pencils sold = 50 / 0.40
= 125
She sold 125 pencils in this period.
(ii) Profit Or Loss Incurred = 0
70 pens were sold, so profit gained = Rs 70
Cost Price Of Pencils = 70 - 0 = Rs 70
No. of pencils sold = 70 / 0.40 = 175
Therefore,
She Sold 175 pencils in the next month.
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