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The Rule of 70: Why?
The Rule of 70: Why? The rule of 70 is used in finance to calculate the number of years it will take for an investment to double in value for a given rate of interest. Example: $10,000 at 5% pa. So, 70 / 5 = 14. This means it takes roughly 14 years for $10,000 to grow to $20,000 at 5% pa. Okay, that's all good. But WHY 70? All I can find online are articles explaini...
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