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milustration 8: A sum of money triples itself at 8 % per annum overa certain time. Find the number of years.Solution: Let Principal be Rs.PAmount = 3 times of Principal = Rs.3P

Answer»

let the some of money be x

then amount will be 3x

rate = 8%

let time be t

then, A = P + I

or, 3x = x + (x * 8 * t)/100

or, 2x = 8xt/100

or, 8xt = 200x

or, t = 200x/8x

or, t = 25yrs (Ans)

25 ia the correct answer of the following question



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