12 Views

Question : A sum triple itself in 9 years at simple interest. Find the rate of interest per annum.

Option 1: $38 \frac{2}{9}$%

Option 2: $33 \frac{1}{3}$%

Option 3: $27 \frac{1}{9}$%

Option 4: $22 \frac{2}{9}$%


Team Careers360 19th Jan, 2024
Answer (1)
Team Careers360 20th Jan, 2024

Correct Answer: $22 \frac{2}{9}$%


Solution : Let P be the principal and R be the rate of interest.
Total amount = 3P
Simple interest, SI = 3P – P = 2P
Term, n = 9 years
So, SI = $\frac{PnR}{100}$
⇒ 2P = $\frac{P×9×R}{100}$
⇒ R = $\frac{200}{9}$ = $22\frac{2}{9}$%
Hence, the correct answer is $22\frac{2}{9}$%.

SSC CGL Complete Guide

Candidates can download this ebook to know all about SSC CGL.

Download EBook

Know More About

Related Questions

TOEFL ® Registrations 2024
Apply
Accepted by more than 11,000 universities in over 150 countries worldwide
Manipal Online M.Com Admissions
Apply
Apply for Online M.Com from Manipal University
View All Application Forms

Download the Careers360 App on your Android phone

Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile

150M+ Students
30,000+ Colleges
500+ Exams
1500+ E-books