At what simple interest rate per annum a sum of money will be doubled on itself in 25 years?


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At what rate percent per annum...

Text Solution

`25% p.a``23% p.a.``35% p.a.``28% p.a.`

Answer : A

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At what rate of simple interest per annum an amount will be doubled in 10 years?

Hence, it will take 10 years for the sum of money to double itself with the rate of 10% per annum simple interest.

At what rate of simple interest will a sum of money double itself in 20 years?

Hence, R = 5%.

What rate of simple interest rate per annum will a sum of money double itself in 4 years?

⇒R=6x100x=16. 6%

At what rate percent per annum of simple interest will as sum of money double itself in 12 years?

Let the principal be x. Then, the amount after 12 years be 2x. Let the rate of interest be R. ∴ The rate of interest is 25/3%.

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