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At what rate percent of SI will a 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%.
At what rate per cent per annum simple interest will a sum be double double of itself in 5 years?According to the question, SI must be equal to 2 × P in order to make the final sum two times the original principal amount after 5 year. ∴ Required rate of interest is of 20%.
At what rate per annum with simple interest will money becomes thrice in 12.5 years?R=12. 5%
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At what rate per cent per annum with simple interest will a sum of money double in 12.5 years?
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