Question

if a certain amount doubles after 25 years then the rate of interest pcpa is​

Answer 1

answer : answer is 12.5

Step-by-step explanation:

25 divided by 2 is 12.5

if 12.5 multiple by 2 then it is 25.

so hence, the answer is 12.5.

Answer 2

Answer:

4 %

Step by-step explanation:

Amount is doubled after 25 years

Let the amount be X

After 25 year it will become 2x

To Find:-

amount which is doubled after 25 Year

Solution:-

Intrest = compound - Principal

2X - X = X rs Intrest

Now:-

Rate = S .I x 100 / p x t

$\frac{x \times 100}{x \times 25} = \frac{100x}{25x} = 4$

4 %