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Shop A sells a lamp to Shop B at 10% profit. Shop B sells it to Leela at 20% profit. Leela pays ₹1980. What did the lamp cost Shop A?

Class 8Profit and LossComparing Quantities
  • A₹1650
  • B₹1584
  • C₹1500
  • D₹1386

Step-by-Step Solution

Leela's price = CP × CP. CP = 1980 ÷ 1.32 = ₹1500. Subtracting 30% of ₹1980 (₹1386) is wrong: successive profits are on different bases.
Answer: C) ₹1500

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