Q. A person earns 30% profit by selling a book for ₹390. What is the cost price?

  • (A) ₹290
  • (B) ₹295
  • (C) ₹300
  • (D) ₹310
✅ Correct Answer: (C) ₹300
Explanation: SP = 390 = 130% of CP; CP = 390 × 100 / 130 = ₹300.

Published by Yami Thakur ⭐ 10.63K Points at 08-Dec-2025 06:42 am in Math

Explanation by: Yami Thakur
SP = 390 = 130% of CP; CP = 390 × 100 / 130 = ₹300.

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