Start practising
Practice mode Simple Interest

A sum of money doubles in 9 years at simple interest. In how many years will it become five times itself at the same rate?

Correct answer C. 36 years

Explanation

Doubling in 9 years means SI equal to P takes 9 years. Five times needs SI = 4P, which takes 4 × 9 = 36 years.

Report a problem

Answer checked How we write and check questions

Tip: press A, B, C or D to answer, and N for the next question.

Advertisement

More Simple Interest questions

See all
Question 02 Simple Interest

What is the rate of simple interest? I. The total interest earned was Rs. 4000. II. The sum was invested for 4 years.

Correct answer B. II alone sufficient while I alone not sufficient to answer

Open question
Advertisement
Question 03 Simple Interest

What percentage of simple interest per annum did Anand pay to Deepak? I. Anand borrowed Rs. 8000 from Deepak for four years. II. Anand returned Rs. 8800 to Deepak at the end of two years and settled the loan.

Correct answer B. II alone sufficient while I alone not sufficient to answer

Open question
Question 04 Simple Interest

What is the sum which earned interest? I. The total simple interest was Rs. 7000 after 7 years. II. The total of sum and simple interest was double of the sum after 5 years.

Correct answer B. II alone sufficient while I alone not sufficient to answer

Open question

Discussion

Have a question about this answer?

Your email address will not be published. Required fields are marked *

Links and website addresses are not allowed in comments.