A city police commissioner intends to reduce the number of street crimes by a rate of 20 percent every three years. The number of street crimes is presently 12,000 per year.If the police commissioner is successful in his goal, how much time will elapse before street crimes are gone from the city?

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A city police commissioner intends to reduce the number of street crimes by a rate of 20 percent every three years. The number of street crimes is presently 12,000 per year.<br>If the police commissioner is successful in his goal, how much time will elapse before street crimes are gone from the city?






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