Here's a simple way to see how inflation erodes your long-term savings - CNBC

A rule of thumb often applied to investment earnings can approximate how fast inflation will halve the value of your money.

Inflation is at a 40-year high. That means consumers are losing buying power at a faster-than-usual pace. Just how quickly is inflation eating away at your savings? The so-called rule of 72 can help… [+2460 chars]

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