Question

Question: At simple interest a sum becomes of itself in 5 years. The rate of interest percent per annum is

a) 8%
b) 5%
c) 10%
d) 12%​

Answer 1

12% .................. .))

Answer 2

Answer:

20%

Step-by-step explanation:

A = P + S.I.

= 2 P

or 2P = P + S.I.

or P = S.I.

S.I. = P * R * T / 100

= P * R * 5 / 100

or P = P * R / 20

or P / P = R /20

or R / 20 = 1

or R = 20