Question : Mona purchased two sets of jewellery for INR 4,000 each. She sold these sets of jewellery, gaining 8% on one and losing 6% on the other. Calculate her total loss or gain in this whole transaction.
Option 1: INR 120 gain
Option 2: INR 80 gain
Option 3: INR 80 loss
Option 4: INR 120 loss
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Correct Answer: INR 80 gain
Solution : Mona purchased two sets of jewellery for INR 4,000 each. She sold these sets of jewellery, gaining 8% on one. Selling price = $\frac{100+ \text{Profit}\%}{100}×$ Cost price So, selling price is $\frac{108}{100}×4000$ = INR 4320 She sold the 2nd set of jewellery at a loss of 6%. Selling price = $\frac{100- \text{Loss}\%}{100}×$ Cost price So, selling price is $\frac{94}{100}×4000$ = INR 3760 Total selling price = (4320 + 3760) = INR 8080 $\therefore$ Her profit is (8080 – 8000) = INR 80 Hence, the correct answer is INR 80 gain.
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