A sum of `Rs. 8000` at compound interest becomes double after 5 years. After 20 years it will become :

A sum of Rs 12,000 deposited at compound interest becomes double after 5 years.After 20 years,it will become: (a) Rs 96000 (b) Rs 1,20,000 (c) Rs 1,24,000 (d) Rs 1,92,000

A sum of Rs. 12000 deposited at compound interest becomes double after 5 years. How much will it be after 20 years?

A sum of Rs. 12,000, deposited at compound interest becomes double after 5 years. How much will it be after 20 years ?

A sum of Rs. 2400 deposited at Cl, doubled after 5 years. After 20 year it will become.

If a certain sum at compound interest becomes double in 5 yr, then in how many years, it will be 16 times at the same rate of interest ?

A sum of money doubles itself at compound interest in 15 years in how many years it will become eight times?