Q. A sum becomes Rs. 4200 in 3 years at 5% simple interest. What is the principal?
✅ Correct Answer: (D)
Rs. 4000
Explanation: A = P(1.15) ⟹ P = 4200/1.15 = 4000.
Explanation by: Mr. Dubey
A = P(1.15) ⟹ P = 4200/1.15 = 4000.