Q. At what simple interest rate will a principal double in 10 years?
✅ Correct Answer: (C)
10%
Explanation: Doubling means SI = P. So P = P×R×T/100 ⇒ 1 = R×10/100 ⇒ R = 100/10 = 10%. Other rates give different multiples of P.
Explanation by: Mr. Dubey
Doubling means SI = P. So P = P×R×T/100 ⇒ 1 = R×10/100 ⇒ R = 100/10 = 10%. Other rates give different multiples of P.