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在一次五年级上学期的数学调研测试中,有这样一道题:为了鼓励居民节约用水,某市从2016年1月1日起实施阶梯水价制,每户4人以下(含4人)按下表收费:赵阿姨全家3人一年用水约240吨,请你算一算:她家一年应付水费多少元?统计我们学校8个班371名学生的解答情况,正确解答的学生只有79名,正确率为21.3%。在错误的解法中,将水费的价格直接按第二阶梯的单价3.75元/吨来
In a fifth-grade math research test, there is such a problem: In order to encourage residents to save water, a city will implement a water price system with effect from January 1, 2016 onwards, and every household will have 4 people or less Table charges: Aunt Zhao 3 people a year about 240 tons of water a year, please count: her family how much water a year to pay? Statistics of our school 371 students in eight classes answer the situation, the correct answer to the students only 79 Name, the correct rate of 21.3%. In the wrong solution, the price of water directly to the second step by the unit price of 3.75 yuan / ton