求助PS: Monthly kilowater-hours | ||||
| 500 | 1,000 | 1,500 | 2,000 |
Present | $24 | $41 | $57 | $73 |
Proposed | $26 | $45 | $62 | $79 |
The table above shows present rates and proposed rates for electricity for residential customers. For wich of the monthly kilowatt-hours shown would the proposed rate be the greatest percent increase over the present rate?
a) 500
B) 1,000
C) 1,500
D) 2,000
正解A. 我对题目的意思有点不理解。这道题的是不是求:proposed rate比 present rate 增加最多的是哪个?我觉得的AB相等啊。
A)(26-24)/500=2/500
B)(45-41)/1000=2/500
没有NN可以帮忙看看的吗
是
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