How fast does inflation cut buying power? Here's a simple guide - CNBC

Rising prices for goods and services mean your money buys less. The "rule of 72" can help gauge how quickly its value decreases.

Inflation is hovering near 40-year highs. The Consumer Price Index, a key inflation metric, increased 8.3% in April from a year ago, the largest jump since the summer of 1982, the U.S. Department of … [+2930 chars]

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