题库搜索>问题求解PS-13388
The annual interest rate earned by an investment increased by 10 percent from last year to this year. If the annual interest rate earned by the investment this year was 1 percent, what was the annual interest rate last year?
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每年以10%的增长率增长
今年是1% 去年是多少？
设去年x
今年就是（1+10%）x=1%
X=9.1%
烦烦的小虎牙
X应该等于0.91%吧，去年的肯定比1%小啊
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2017-04-25 12:10:26
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