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某城市为鼓励市民节约用水,实行用水量分段计费,收费标准如下:10吨及以下部分,每吨收费1.6元;10～15吨(含15吨)部分,每吨收费2元;15吨以上部分,每吨收费3元。
In order to encourage citizens to conserve water, a city charges water by stages. The charges are as follows: 10 tons and below, 1.6 yuan per ton; 10-15 tons (including 15 tons) and 2 yuan per ton; 15 Above the ton, 3 yuan per ton.