A book was sold for a certain sum and there was a loss of 20 % had irt been sold for 12 rs more
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Lets say the price of the book is x.
A sale of 20% loss would mean 80% of the marked price= 80/100x=0.8x
if the book would be sold for Rs. 12 more (0.8x+12) profit will be 30%, that means 130% of marked price= 130/100x= 1.3x
Therefore 0.8x+12 = 1.3x
subtract 0.8x from both sides ,
1.3x-0.8x= 12
0.5x=12
x =12/0.5
x= 24
Therefore the price of the book was Rs.24
Price at 20% loss= 0.8x= 0.8(24) = Rs.19.2
if the book is sold for 4.8 more= 19.2 + 4.8 = Rs.24 (that means there would be no profit or loss)
The profit would be zero since its sold at the same price it was bought.
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24 ( no profit no loss)
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