In a bank, principal increases continuously at the rate of r% per year. Find the value of r if Rs 100 double itself in 10 years `(log_e^2=0. 6931)`

Explanation

To solve the problem, we need to find the value of \( r \) given that Rs. 100 doubles in 10 years with continuous compounding.

### Step-by-Step Solution:

1. **Understanding the Problem**:
The principal amount \( P \) increases continuously at a rate of \( r\% \) per year. This means we can use the formula for continuous growth:
\[
P(t) = P_0 e^{rt}
...