Arithmetichard · Past Paper
A sum of money double itself in 4 years at compound interest. In how many years will it become 8 times itself?
A8 years
B12 years
C16 years
D20 years
✓ Correct Answer: B — 12 years
2^1 times in 4 years. 8 = 2^3 times in 4 * 3 = 12 years.
Share this question
More from Arithmetic
- What is 25% of 600?
- If a number is increased by 20% and then reduced by 20%, the resulting number is how much less than the original?
- If the MP of an object is Rs. 100 and it is sold for Rs. 85, the discount rate is:
- Calculate the rate of interest if P = 1000, T = 1 year, and SI = 50.
- What is the percentage value of 1/8?