The rule of 72 is a simple formula that shows how quickly your money will double at a given return rate. It works by dividing ...
I'm 57 and my husband is 59. We've been married 26 years, and our two kids, 24 and 27, support themselves. We bought our house in 2003 for $410,000, and it's now worth about $720,000. We owe $300,000 ...