-
A sum becomes two fold in 6 yr at a certain rate of interest. Find the time, in which the same mount will be 10 fold at the same rate of interest.
-
- 35 yr
- 49 yr
- 59 yr
- 54 yr
- None of the above
Correct Option: D
Here, n = 2, m =10, T1 = 6 yr, T2 = ?
∴ T2 = [(m - 1) / (n - 1)] x T1
= [(10 - 1)/(2 - 1)] x 6
= 54 yr
