Question

A sum of money becomes triple of itself in 8 yr
at SI. In twelve years, it will become how many
times of itself at the same rate?​

Answer 1

Answer:

If a sum of money becomes 3x itself in 8 years, then it grows by 200%. 200% divided by 8 years equals 25% a year. To become 6x, we have:

6=1 + .25t

where t is time, in years. Then:

5=.25t

t=20 years