Show
Correct Answer:
Description for Correct answer: Let the amount = P After 20 years the amount = 2P S.I = 2P – P = P Rate of Interest = \( \large\frac{P \times 100}{P \times 20} =5 \)% Part of solved TNPSC Question Paper-2014 questions and answers : Exams >> TNPSC >> TNPSC Question Paper-2014
Answer (Detailed Solution Below)Option 1 : 20% Formula for Simple Interest - \(SI = \frac{{P \times R \times T}}{{100}}\) Where, P = Principal R = Rate of interest T = Time period Let the required rate of interest be X. 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. \(\therefore {\rm{P}} = {\rm{}}\frac{{{\rm{P}} \times {\rm{X}} \times 5}}{{100}}\) ⇒ X = 20% ∴ Required rate of interest is of 20%. Ace your Interest preparations for Simple Interest with us and master Quantitative Aptitude for your exams. Learn today!
Last updated date: 02nd Jan 2023 • Total views: 275.7k • Views today: 27.50k Answer Verified Hint: - Here we go through by the formula of simple interest that we study in the chapter of simple interest. i.e.$SI = \dfrac{{P \times R \times T}}{{100}}$ . By this formula we will be able to calculate the rate. Complete step-by-step answer: Here in the question the principal amount is not given. Note: - Whenever we face such a type of question, the key concept for solving the question is to first assume the principal amount because the principal amount is not given and then proceed with the question to find the S.I. Then by putting the formula of S.I we will get the terms which we need to find. Toll Free:1800-120-456-456 Mobile:+91 988-660-2456 (Mon-Sun: 9am - 11pm IST) Questions?Chat with us
Course NCERT Class 12Class 11Class 10Class 9Class 8Class 7Class 6 IIT JEE Exam JEE MAINSJEE ADVANCEDX BOARDSXII BOARDS NEET Neet Previous Year (Year Wise)Physics Previous YearChemistry Previous YearBiology Previous YearNeet All Sample PapersSample Papers BiologySample Papers PhysicsSample Papers Chemistry Download PDF's Class 12Class 11Class 10Class 9Class 8Class 7Class 6 Exam CornerOnline ClassQuizAsk Doubt on WhatsappSearch DoubtnutEnglish DictionaryToppers TalkBlogJEE Crash CourseAbout UsCareerDownloadGet AppTechnothlon-2019 Logout Login Register now for special offers +91 Home > English > Class 14 > Maths > Chapter > Simple Interest > Ifa sum of money double itself... Updated On: 27-06-2022 (00 : 00) Text Solution `4%``8%``5%``10%` Answer : C Answer Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams. Related Videos643672333 200 7.6 K 1:49 At what rate per cent will a sum of money double itself in `10` years ? 643672298 200 3.4 K 0:50 At what rate per cent will a sum of money double itself in `6` years ? 283261292 100 9.5 K 2:44 At what rate per cent per annum simple interest will a sum double itself in 10 years? 283261352 200 7.3 K 2:44 At what rate per cent per annum simple interest will a sum double itself in `10` years? 643500644 200 400 2:51 At what rate per cent per annum simple interest will a sum double itself in 8 years ? 648666780 100 6.0 K 2:55 A sum of money put at simple interest trebles itself in 15 years. The rate per cent per annum is Show More 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 of simple interest a sum doubles in 20 years?Hence, R = 5%.
At what rate of simple interest will a sum triple itself in 20 years?R=12. 5%
At what rate of SI will a sum becomes five times itself in 20 years?r=204×100=20%
At what rate percent will a sum of money doubles itself in 10 years?Hence the required rate in which the sum becomes double itself in 10 years is 10%.
|