a shopkeeper earn a profit of 5 by selling one note book and incurs a loss 1 by selling and old pen in a particular month.the shopkeeper earn a profit of 185 if the sold 75 old pen find the number of the not book
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Step-by-step explanation:
ans is 52 as
if he gets 185 that means profit - loss = 185
by selling 1 pen there is loss of 1 hence
by selling 75 pens loss is 75
as Profit - Loss = 185
Profit = 185 + Loss
Hence profit = 185 + 75 = 260
Profit Per Pen = 5
total profit = 5 × No of Pens
No of pens = 260/5
Hence no of pens is 52
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