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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 |
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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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