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A dealer sells a book for Rs 24 and gains as much per cent as the cost price of the book. Find the cost price of the book.

a. 20
b. 22
c. 18
d. 16


The answer is a. 20 If cp is 20, profit is 4₹ and profit % is 4/20*100 wihich is 20%. Therefore cp and profit perce t are same.
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