配套习题- 一元二次方程的应用——利润问题 -【青果学院】

挑战习题

1/5单选题

难度：

1.将进货单价为40元的商品按50元出售时，售出500个，经市场调查发现：该商品每涨价1元，其销量减少10个，为了赚8000元，则售价应定为（　　）

A	60元
B	80元
C	60元或80元
D	70元

提示1：: IOagueaNrumimOaEj++8jOWPr+W+l+WIqea2pj3moIfku7ct6L+b5Lu377yM5Y2z5Y+v6KGo56S65Ye65q+P5Lu255qE5Yip5ram77yM5YaN5qC55o2u5q+P5Lu255qE5Yip5ramw5fmiYDllK7nmoTku7bmlbA95oC75Yip5ram77yM5Y2z5Y+v5YiX5Ye65pa556iL5rGC6KejLg==

正确答案：Qw==

6Kej77ya6K6+5rao5Lu3eOWFg++8jOWIme+8mjxicj7vvIgxMCt477yJ77yINTAwLTEweO+8iT04MDAw77yMPGJyPjUwMDAtMTAweCs1MDB4LTEweDxzdXA+Mjwvc3VwPj04MDAw77yMPGJyPng8c3VwPjI8L3N1cD4tNDB4KzMwMD0w77yMPGJyPu+8iHgtMjDvvIk8c3VwPjI8L3N1cD49MTAw77yMPGJyPngtMjA9MTDmiJZ4LTIwPS0xMO+8jDxicj7op6PlvpfvvJp4PHN1Yj4xPC9zdWI+PTMw77yMeDxzdWI+Mjwvc3ViPj0xMO+8jDxicj7nu4/mo4DpqozvvIx455qE5YC856ym5ZCI6aKY5oSP77yMPGJyPuaJgOS7peWUruS7t+S4ujUwKzMwPTgw5YWD5oiWNTArMTA9NjDlhYMuIDxicj7mlYXpgIlDLiA=

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2/5单选题

难度：

2.将进货单价为40元的商品按50元出售时，能卖500个，已知该商品每涨价1元，其销量就要减少10个，为了赚8000元利润，则应进货（　　）

A	400个
B	200个
C	400个或200个
D	600个

提示1：: IOiuvumUgOWUruS7t3jlhYMv5Liq77yM55Sx5LqO6L+b6LSn5Y2V5Lu35Li6NDDlhYPnmoTllYblk4HmjIk1MOWFg+WHuuWUruaXtu+8jOiDveWNljUwMOS4qu+8jOW3suefpeivpeWVhuWTgeavj+a2qOS7tzHlhYPvvIzlhbbplIDph4/lsLHopoHlh4/lsJExMOS4qu+8jOaJgOS7peeOsOWcqOiDveWkn+WNlls1MDAtMTDvvIh4LTUw77yJXeS4qu+8jOavj+S4quWIqea2puS4uu+8iHgtNDDvvInvvIzogIzmgLvliKnmtqbkuLo4MDAw5YWD77yM55Sx5q2k5Y2z5Y+v5YiX5Ye65pa556iL6Kej5Yaz6Zeu6aKYLg==

正确答案：Qw==

6Kej77ya6K6+6ZSA5ZSu5Lu3eOWFgy/kuKrvvIw8YnI+5L6d6aKY5oSP5b6XWzUwMC0xMO+8iHgtNTDvvIldJiM4MjI2O++8iHgtNDDvvIk9ODAwMO+8jDxicj7iiLR4PHN1cD4yPC9zdXA+LTE0MHgrNDgwMD0w77yMPGJyPuKItHg9NjDmiJZ4PTgw77yMPGJyPuW9k3g9NjDml7bvvIw1MDAtMTDvvIh4LTUw77yJPTQwMO+8jDxicj7lvZN4PTgw5pe277yMNTAwLTEw77yIeC01MO+8iT0yMDDvvIw8YnI+4oi05bqU6L+b6LSnNDAw5oiWMjAw5LiqLiA8YnI+5pWF6YCJQy4g

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3/5单选题

难度：

3.一件工艺品进价为100元，标价为135元售出，每天可售出100件，根据销售统计，一件工艺品每降低1元出售，则每天可多售出4件，要使顾客尽量得到优惠，且每天获得利润为3596元，每件工艺品需降价（　　）元.

A	4
B	6
C	4或6
D	5

提示1：: IOiuvuW3peiJuuWTgemcgOmZjeS7t3jlhYPvvIzpgqPkuYjlsLHlpJrljZblh7o0eOS7tu+8jOagueaNruavj+WkqeiOt+W+l+WIqea2puS4ujM1OTblhYPvvIzlj6/liJfmlrnnqIvmsYLop6Mu

正确答案：Qg==

6Kej77ya6K6+5bel6Im65ZOB6ZyA6ZmN5Lu3eOWFg++8jDxicj7vvIgxMzUteO+8ie+8iDEwMCs0eO+8iS0xMDDvvIgxMDArNHjvvIk9MzU5Njxicj54PHN1cD4yPC9zdXA+LTEweCsyND0wPGJyPng9NOaIlng9Ni4gPGJyPuWboOS4uuimgeS9v+mhvuWuouWwvemHj+W+l+WIsOS8mOaDoO+8jDxicj7miYDku6V4PTTvvIjoiI3ljrvvvIkuIDxicj7mlYXpgIlCLiA=

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4/5单选题

难度：

4.某商品的进价为每件40元. 当售价为每件60元时，每星期可卖出300件，现需降价处理，为占有市场份额，且经市场调查：每降价1元，每星期可多卖出20件. 现在要使利润为6120元，每件商品应降价（　　）元.

A	3
B	2.5
C	2
D	5

提示1：: IOiuvuWUruS7t+S4unjlhYPml7bvvIzmr4/mmJ/mnJ/nm4jliKnkuLo2MTI15YWD77yM6YKj5LmI5q+P5Lu25Yip5ram5Li677yIeC00MO+8ie+8jOWOn+adpeWUruS7t+S4uuavj+S7tjYw5YWD5pe277yM5q+P5pif5pyf5Y+v5Y2W5Ye6MzAw5Lu277yM5omA5Lul546w5Zyo5Y+v5Lul5Y2W5Ye6WzMwMCsyMO+8iDYwLXjvvIld5Lu277yM54S25ZCO5qC55o2u55uI5Yip5Li6NjEyMOWFg+WNs+WPr+WIl+WHuuaWueeoi+ino+WGs+mXrumimC4=

正确答案：QQ==

6Kej77ya6K6+5ZSu5Lu35Li6eOWFg+aXtu+8jOavj+aYn+acn+ebiOWIqeS4ujYxMjDlhYPvvIw8YnI+55Sx6aKY5oSP5b6X77yIeC00MO+8iVszMDArMjDvvIg2MC1477yJXT02MTIw77yMPGJyPuino+W+l++8mng8c3ViPjE8L3N1Yj49NTfvvIx4PHN1Yj4yPC9zdWI+PTU477yMPGJyPueUseW3suefpe+8jOimgeWkmuWNoOW4guWcuuS7vemine+8jOaVhemUgOWUrumHj+imgeWwvemHj+Wkp++8jOWNs+WUruS7t+imgeS9ju+8jOaVheiIjeWOu3g8c3ViPjI8L3N1Yj49NTguIDxicj7iiLTmr4/ku7bllYblk4HlupTpmY3ku7c2MC01Nz0z5YWDLiA8YnI+5pWF6YCJQS4g

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5/5单选题

难度：

西瓜经营户以2元/千克的价格购进一批小型西瓜，以3元/千克的价格出售，每天可售出200千克. 为了促销，该经营户决定降价销售. 经调查发现，这种小型西瓜每降价0.1元/千克，每天可多售出40千克. 另外，每天的房租等固定成本共24元，为了减少库存，该经营户要想每天盈利200元，应将每千克小型西瓜的售价降低（　　）元.

A	0.2或0.3
B	0.4
C	0.3
D	0.2

提示1：: 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

正确答案：Qw==

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