Question

The rate at which a sum becomes four times of itself in 25 years at s.I.,will be:

Answer 1

Answer:

12%

Step-by-step explanation:

Given  

The rate at which a sum becomes four times of itself in 25 years at s.I.,will  

Let the principal amount be x

So after 25 years

T = 25 and amount will be 4x

Now simple interest will be 4x – x = 3x

We know that SI = PRT / 100

R = SI x 100 / R T

    = 3x . 100 / x . 25

       = 3 x 4  

    R  = 12%

Answer 2

Answer:

Step-by-step explanation: