Question

(iii) A sum will be double itself at a simple interest p.a. in 8 years. The simple
interest is
(A) 10%
(B) 10-5%
(C) 12%
(D) 12-5%​

Answer 1

Answer:

446Q:

At what rate percent per annum will a sum of money double in 8 years.

A) 12.5%

B) 13.5%

C) 11.5%

D) 14.5%

Answer: A) 12.5%

Explanation:

Let principal = P, Then, S.I.= P and Time = 8 years

We know that S.I. = PTR/100

Rate = [(100 x P)/ (P x 8)]% = 12.5% per annum.