Inflation is getting so old that we might need to come up with a new term for it. It’s something that’s been ever-present in our lives for more than a year now, and if the end is in sight at all, it sure is foggy. It’s gotten to a point where most of us are adjusting our lives in response to these historic numbers, and luckily, there’s a rule of thumb for sizing up the situation out there already. It’s called the Rule of 72, and it’s usually reserved for calculating how long it’ll take to double an investment, but now we’re applying it to our cash. It works like this: You divide 72 by the percent value of an investment’s annual APY. So, an investment with a 2% yield would theoretically take 36 years to double, and a 12% yield would take just 6 years. Applying that to inflation: It works much the same, just in reverse. If we’re averaging 9% inflation per year, by applying that same process, we’d show that our currency would probably lose approximately half its value in about 8 years. Why does it work? Without trying to explain the math details, it’s derived from a logarithmic formula, even though it was actually likely noticed years before we used complex math to prove it. The actual number is 69.3, and some people prefer to round up and use the rule of 70 instead. Overall, it’s just an approximation, but it’s useful. Take this related lesson on this topic and earn Dibs 🟡 you can redeem for rewards:
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