PETS四级考试写作精选短语(51)

2015-01-04 17:08:00来源:网络

  Rule of 72

  a common formula used to determine the years needed for money to double at compound interest; divide 72 by the interest rate to get the number of years

  EXAMPLE:

  According to the rule of 72, $10,000 invested at 6 per cent interest doubles to $20,000 in twelve years.


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