The sum of money at compound interest amounts to thrice itself in 3 years. In how many years will it be 9 times itself?
Q1. The sum of money at compound interest amounts to thrice itself in 3 years. In how many years will it be 9 times itself?
Answer: 6
Explanation: At compound interest, if a sum triples in 3 years, becoming 9 times is squaring the result (3²), which requires double the time: 2 × 3 = 6 years.