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.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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