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A person purchased a book and a novel for Rs. 2800. He sold the book at a profit of 10% and the novel at a profit 15.25%. If his total profit was 13%, find the difference between the Cost price of the Book and Novel.

200

400

450

350

Explanation:

We solve this question using the concept of Alligation.
                10            15.25
                        13
        15.25 – 13 :     13 – 10
              2.25     :     3
                 3       :     4
The price of Book = 2800 × 3/7 = 1200
The price of Novel = 2800 x 4/7 = 1600
The difference between the Cost price of the Book and Novel = 1600 – 1200 = Rs. 400

By: Amit Kumar

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