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| 1. |
The least number of complete years in which a sum of money put out at 20% compound interest will be more than doubled is: |
| Answer» P 1 + 20 n > 2P 6 n > 2. 100 5 Now, 6 x 6 x 6 x 6 > 2. 5 5 5 5 So, n = 4 years. | |