Question

At what rate of interest per annum will a sum of money double itself in 4 years?
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Answer 1

Answer:

25%

Step-by-step explanation:

As an example, i have 3524. The interest is 25%.

then we count..

(25/100 * 3524) * 3524=7048

when we divide 7048 into 2 we will get 3524.

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