Answer Show  Hint: We will assume the sum invested as x rupees. We have been given that it becomes triple after 3 years which means it becomes 3 x. Now, we know that the final amount = principal amount + simple interest. So, we will find the simple interest from that and using the formula, $\text{simple interest}=\dfrac{\text{principal amount}\times \text{time}\times \text{rate}}{100}$, we will find the rate of interest. Complete step-by-step answer: Note: There is a possibility that the students think that the simple interest becomes triple of the principal amount, that is simple interest is 3 x. So, in further calculations for finding the rate of interest, they will end up with, $rate=\dfrac{3\times 100}{16}\Rightarrow 18.75\%$. But students should read the question carefully to understand that the sum becomes triple, which means the principal amount becomes triple after 16 years.
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Answer Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams. Related Videos648666780 100 7.4 K 2:55 A sum of money put at simple interest trebles itself in 15 years. The rate per cent per annum is 283261292 0 6.3 K 2:44 At what rate per cent per annum simple interest will a sum double itself in 10 years? 643500644 0 1.3 K 2:51 At what rate per cent per annum simple interest will a sum double itself in 8 years ? 283261352 0 3.2 K 2:44 At what rate per cent per annum simple interest will a sum double itself in `10` years? 643672285 0 4.9 K 2:26 At what rate per cent will a sum of money triple itself in `12` years ? 647828710 40 7.4 K 1:37 The rate per cent per annum at which the sum of money double itself in 16 yr at simple interest is Show More Comments Add a public comment... Follow Us: Popular Chapters by Class: Class 6 AlgebraBasic Geometrical IdeasData HandlingDecimalsFractions Class 7 Algebraic ExpressionsComparing QuantitiesCongruence of TrianglesData HandlingExponents and Powers Class 8 Algebraic Expressions and IdentitiesComparing QuantitiesCubes and Cube RootsData HandlingDirect and Inverse Proportions Class 9 Areas of Parallelograms and TrianglesCirclesCoordinate GeometryHerons FormulaIntroduction to Euclids Geometry Class 10 Areas Related to CirclesArithmetic ProgressionsCirclesCoordinate GeometryIntroduction to Trigonometry Class 11 Binomial TheoremComplex Numbers and Quadratic EquationsConic SectionsIntroduction to Three Dimensional GeometryLimits and Derivatives Class 12 Application of DerivativesApplication of IntegralsContinuity and DifferentiabilityDeterminantsDifferential Equations Privacy PolicyTerms And Conditions Disclosure PolicyContact Us At what rate percent per annum will a sum treble itself in 8 years?⇒R=2P×100P×16=12.5%
At what rate percent per annum simple interest will a sum double itself in 8 years?Hence, the rate of interest to double a money in 8 years will be 12.5% per annum.
In what time the sum of money will triple at 8% pa simple interest?This is Expert Verified Answer
hence, after 25 years sum of money will be triple itself .
At what rate percent per annum will a sum treble itself in 10 years?Hence, we get the rate of interest as 12.5 %.
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At what rate percent per annum simple interest will a sum treble itself in 8 years
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