A bookseller bought 7 identical sets of books at ₹375 each. He sold 3 sets at a profit of 16% per set and the remaining sets at a profit of 24% per set. What was his total profit (in ₹) from selling all the sets?
₹540
Cost of one set is ₹375. He sells 3 sets at 16% profit and the remaining \(7 - 3 = 4\) sets at 24% profit.
Profit on 3 sets \(= 3 \times 375 \times \dfrac{16}{100} = 1125 \times 0.16 = 180\), i.e. ₹180.
Profit on 4 sets \(= 4 \times 375 \times \dfrac{24}{100} = 1500 \times 0.24 = 360\), i.e. ₹360.
Total profit \(= 180 + 360 = 540\).
Hence, the total profit is ₹540.
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