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    Question

    The ratio between the cost price of book I and book J is

    4:3 respectively. Each of the books was marked 20% above its cost price. If the MRP of book I is Rs. 480 more than the MRP of book J, then find out the sum of the cost price of both of the books.
    A Rs.2520 Correct Answer Incorrect Answer
    B Rs.1625 Correct Answer Incorrect Answer
    C Rs.1310 Correct Answer Incorrect Answer
    D Rs.2800 Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    ATQ, The ratio between the cost price of book I and book J is 4:3 respectively. Let’s assume the cost price of book I and book J is 4u and 3u respectively. Each of the books was marked 20% above its cost price. 4u of (100+20)% = 3u of (100+20)% + 480 4u x 1.2 = 3u x 1.2 + 480 1.2(4u - 3u) = 480 u x 1.2 = 480 u = 480 / 1.2 u = 400 Sum of the cost price of both of the books = 4u + 3u = 7u = 7 x 400 = Rs.2800

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