Question
A sum of money at certain rate of interest when
compounded annually becomes ₹625 in 3 years and ₹675 in 4 years. What is the rate of Interest per annum?Solution
Considering the 4-year investment, the sum at the end of the 3rd year i.e. Rs. 625 acts as the principal amount for the 4th year. We know that one year of compound interest is equivalent to one year of simple interest. Let the rate of interest be R%. According to the question, 625 + (625 × R × 1) ÷ 100 = 675 (625 × R × 1) ÷ 100=50 R =5000/625=8%.
Five years ago, the average age of a family of four members was 25 years. Six years hence, the ratio of their ages will be 9:7:5:3. Find the a...
The present ages of A and B are in the ratio 7 : 5. After 6 years, the ratio of their ages will be 4 : 3. Find A's present age.
My grandfather’s age was seven times older to me 14 years ago. He would be two times of my age seven years from now. Seven years ago, what was the...
The current average age of students in a class is 24 years. What will the average age of the students be in 6 years?
Present age of ‘A’ is 25% more than that of ‘B’. If 9 years hence from now, ‘B’ will be 6 years younger than ‘A’, then find the sum of p...
6 years from now, the ratio of ages of Amit and Sumit will be 4:5, respectively. The sum of their present ages is 114 years. What is the difference betw...
- Five years from now, the sum of the ages of ‘X’ and ‘Y’ will be 50 years. Ten years ago, ‘X’ was 8 years younger than ‘Y’. What will be the...
Five years from now, K and M together will be 80 years old. If their present ages are in the ratio 4:3, find the difference in their ages.
Five years ago, the ratio of Aman's age to Rahul's age was 6:5. It is also known that Aman's age will be 47 years five years from now. Additionally, R...
Four years ago, the ages of the father and his son were in the ratio 7:2. Four years hence, the ages of the father and his son will be in the ratio 9:4....
Relevant for Exams:
