What time will it take for a sum to amount to three times itself at 12% per annum under simple interest ?

Explanation

To solve the problem, we need to determine the time it will take for a sum of money to triple itself at a simple interest rate of 12% per annum.

### Step-by-Step Solution:

1. **Understand the Problem**:
We need to find out how long it will take for a principal amount (P) to grow to three times itself (3P) under simple interest at a rate of 12% per annum.

2. **Use the Simple Interest Formula**:
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