涛涛24--18

18

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?

A. 1%   B. 1.1%  C. 9.1%  D. 10%   E. 10.8%

 我做出来的答案比所有的正确答案都小一位, 去年的利息=(1%)/(1.1)=0.0091=0.91% 不是9.1%

请问是不是答案错啦?还是藕什么地方算错啦?

你的答案是对的