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A seller sells a book for Rs.216 at a profit of 20%. If the cost of production increases by 30%,find the increase in the price of book so that the profit

percentage of the publisher remains the same.
Please answer fast and with all steps.


We have to find the production price of the book 

for that take p as the production price

p * 120 %/100 =216

p=180 INR

so we got the actual price.

Now the 30% increase in production

180 * 30%/100= 54 INR

so the production cost now is 234 INR

234 * 20%/100= 46.4 INR

So the selling price = 280.4 INR

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