随着国家刺激消费政策的落实,我市拥有家用汽车的数量快速增长,

随着国家刺激消费政策的落实,我市拥有家用汽车的数量快速增长,截止2009年底我市家用汽车拥有量为76032辆.己知2007年底我市家用汽车拥有量为52800辆.请解答如下问题:

1.2007年底至2009年底我市家用汽车拥有量的年平均增长率是多少?

2.为保护城市环境,市政府要求到2011年底家用汽车拥有量不超过80000辆,据估计从2009年底起,此后每年报废的家用汽车数量是上年底家用汽车拥有量的4%,要达到市政府的要求,每年新增家用汽车数量最多不超过多少辆?(假定每年新增家用汽车数量相同,结果精确到个位)

 

答案

 

1.20%

2.

解析:略

 

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