ATQ, Given: Necklace sold for Rs. 4000 at a 25% profit. Bracelet sold for Rs. 1200 at a 20% profit. Assumption: Cost price of the necklace = Rs.'n' and cost price of the bracelet = Rs.'b'. Calculation for the necklace 
Calculation for the bracelet : 
If the necklace is sold for Rs.3500, the loss = 3200−3500=−300. Total cost = 3200+1000 = 4200. To avoid any loss = 3500+p = 4200 ⇒ p = 700 He must sell the bracelet for at least Rs.700 to avoid any loss.
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