题目

一家商店因换季将某种服装打折销售，每件服装如果按标价的4折出售将亏40元，而按标价8折出售将赚40元．问：（1）每件服装的标价是多少元？（2）每件服装的成本是多少元？（3）为了保证不亏损，最多可以打几折？ 答案：【答案】(1) 每件服装的标价是200元．(2) 每件服装的成本是120元．(3) 最多可以打6折．【解析】（1）设每件服装的标价是x元，若每件服装如果按标价的四折出售将亏40元，此时成本价为0.4x+40元；若按标价的八折出售将赚40元，此时成本价为：0.8x﹣40元，由于对于同一件衣服成本价是一样的，以此为等量Dear sir, I read your story (of the 4th February) about the cost of living in the country rather than in the town, and I agree with most of the points that you made. My husband and I lived in the middle of Horlton until two years ago — a seaside town of nearly five hundred thousand people. When my husband stopped working, we moved to our present house in a small village at the foot of Roland Hill, and there is no doubt that our costs are higher now. I have to do my shopping in small shops, where the food is more expensive than in city supermarkets; it costs more to travel by bus; and because the men who come to mend the television or the washing machine, have to come farther, we have to pay them more. But it does not cost us much to enjoy what is beautiful in the country; and peace and quiet are cheap. Many people spend a great deal of time and money driving into the country to enjoy the simple things of life; yet we can enjoy them just by going out of the front door. It costs more to live here than it did in Horlton but now life really is worth living. Yours faithfully. Edith Randall 【小题1】What do you know about Horlton? A．A quiet town not far from the sea. B．A middle-sized town until two years ago. C．A town with a population of nearly half a million. D．A small village at the foot of Roland Hill【小题2】 What Mrs Randall really wants to express in the letter is that _____. A．it cost less to live in the country B．it costs more to live in the country C．living in the country is no better than in the town D．she is quite satisfied with the life in the country【小题3】One can probably find this letter in _____. A．a guidebookB．a newspaperC．a speechD．a story book【小题4】According to the passage, which of the following is true? A．The letter is written by an unknown person. B．This letter is a reply to the questions of 4th February. C．Living in the country is better than living in the city. D．The cost of living in the city is lower than that of the country.