請將這些英文轉成中文~!

2007-01-03 4:37 am
如題,內容如下:

The charge of the tap water supply $W is calculated based on the consumption (c m^3 ) in four months.The first 12m^3 of tap water consumed is free of charge, and the charge for every m^3 consumed afterwards is $4.5.

(a) Write down a formula calculating the value of W for c > 12.
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(b) If John consumed 25m^3 of water in the past four months, how much should he pay ?

**註:上面的>是 greater than or equal to **
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回答 (1)

2007-01-10 8:10 am
✔ 最佳答案
自來水供應的費用為 $W,該費用基於四個用的使用量c (m^3)來計算。首12m^3的自來水是免費的,其後每使用1m^3的自來水需要付 $4.5。

(a) 寫下一計算W值的公式適用於c ≥ 12。
(b) 如果John在過去四個月使用了25m^3的自來水,他應支付多少錢?

根據我對題目既理解
我相信consumption (c m^3 )應該係consumption c (m^3 )咁先岩
小小typing mistake

上面位人兄
charge在這裡應解作費用


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