Question

. A man sold a book at a loss of 20%. If he had
sold the book for & 12 more he would gained 10%.
Find the cost price of
cost price of the book.
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Answer 1

Now, if the man had sold the book for Rs. 12 more then he would have made a profit of 10%, so accordingly we can form an equation as, Thus, the cost price of the book is Rs. 40.