问答题At the eating contest the winner ate an average of 15 hot dogs at the first 20 sittings. After a further 20 sittings the average increased to 20 hot dogs. What was the average for the last 20 sittings?

题目
问答题
At the eating contest the winner ate an average of 15 hot dogs at the first 20 sittings. After a further 20 sittings the average increased to 20 hot dogs. What was the average for the last 20 sittings?
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1.Foraninventoryreport,youcreatedawork_in_progressthatcontainstwocolumns,ID_numberandquantity.Theparentgroupofthework_in_progressisin_inventorywhichcontainsonecolumn,dept_no.Youaddedafilteroffistfifteentototal_inventoryandafilteroflast20forwork_in_progress.Whichrecordswillthereportreturn?（）A.First15dept_novalues.B.Last20ID_noandquantityvalueswiththefirst15dept_novaluesforeachwork_in_progressvalue.C.First15dept_novalueswiththelast20ID_numberandquantityvaluesforeachtotal_inventoryvalue.D.First15dept_novaluesandthelast20ID_noandquantityvalues.E.Thelast20ID_numberandquantityvalues.

2.共用题干 第一篇Heat and HealthExtremely hot weather is common in many parts of the world.Although hot weather just makes most people hot,it can cause medical problems and death.Health experts say that since the year 1900,extremely hot weather has killed more people in the United States than any other natural event.One year一the unusually hot summer of 1980一heat caused about 1,700 deaths in the United States.In 1995,more than 600 people died in a similar heat wave in one city一Chicago.To measure extreme heat,government weather experts have developed the Mean Heat Index.It measures the average of how hot it is felt all day on an extremely hot day.Experts say it is the total heat of a hot day or several hot days that can affect health.Several hot days are considered a heat wave.Experts say heat waves often become deadly when the nighttime temperature does not drop much from the highest daytime temperature.The most common medical problem caused by hot weather is heat stress.It is also least severe.For most people,the only result of heat stress is muscle pain.The pain is a warning that the body is becoming too hot. Doctors say drinking water will help the pain disappear after the body again has the right amounts of water and salt.For some people, however,the result is much more serious.For example,doctors say some people face a greatly increased danger from heat stress.These people have a weak or damaged heart,high blood pressure,or other problems of the blood system.Severe heat can help cause a heart attack or stroke.Health experts say this is the most common cause of death linked to hot weather. What can people learn from the Mean Heat Index?A:The average temperature of an extremely hot day.B:The highest temperature of an extremely hot day.C:The lowest temperature of an extremely hot day.D:The nighttime temperature of an extremely hot day.

3.在Excel中，函数average(6,10，20)的值为()。A、10 B、11 C、12 D、13

4.EXCEL2003中，在单元格中输入=20AVERAGE(7,9)，将显示()。A.TRUEB..T.C.FALSED.YES

更多“问答题At the eating contest the winner ate an average of 15 hot dogs at the first 20 sittings. After a further 20 sittings the average increased to 20 hot dogs. What was the average for the last 20 sittings?”相关问题

  • 第1题：

    For an inventory report, you created a work_in_progress that contains two columns, ID_number and quantity. The parent group of the work_in_progress is in_inventory which contains one column, dept_no. You added a filter of fist fifteen to total_inventory and a filter of last 20 for work_in_progress. Which records will the report return?（）

    • A、First 15 dept_no values. 
    • B、Last 20 ID_no and quantity values with the first 15 dept_no values for each work_in_progress value. 
    • C、First 15 dept_no values with the last 20 ID_number and quantity values for each total_inventory value. 
    • D、First 15 dept_no values and the last 20 ID_no and quantity values. 
    • E、The last 20 ID_number and quantity values.

    正确答案:C

  • 第2题：

    在Excel中，函数AVERAGE（3，5，7，5）的值是（）。

    • A、5
    • B、4
    • C、20

    正确答案:A

  • 第3题：

    What call performance statistics are reported on the Cisco Wireless IP Phone 7921 user interface?（）

    • A、minimum jitter
    • B、maximum jitter
    • C、upstream standard packet deviation
    • D、average MOS value
    • E、average conceal rate

    正确答案:D

  • 第4题：

    单选题
    EXCEL2003中，在单元格中输入=20<>AVERAGE（7，9），将显示（）。
    A

    TRUE

    B

    .T.

    C

    FALSE

    D

    YES


    正确答案： C
    解析： 暂无解析

  • 第5题：

    单选题
    The average of a, b, c, d, and e is 28. If the average of a, c, and e is 24, what is the average of b and d?
    A

    31

    B

    32

    C

    33

    D

    34

    E

    36


    正确答案： C
    解析：
    If the average of a, b, c, d, and e is 28, then (a + b + c + d + e)/5 = 28, or a + b + c + d + e=5×28= 140. If the average of a, c, and e is 24, then (a + c + e)/3 = 24. Or a + c + e= 3 × 24 = 72. Substituting 72 for a+c+e in a+b+c+d+e=140 gives b+d+72 = 140, b +d = 140－72 = 68, (b + D./2 = 68/2 = 34.

  • 第6题：

    单选题
    The average (arithmetic mean) of c and d is 12, and the average of c, d, and e is 10. What is the value of e?
    A

    6

    B

    10

    C

    12

    D

    18

    E

    20


    正确答案： A
    解析：
    根据题目中已知的数量关系，可列等式如下：c+d= 12×2=24……①；c+d+e=10×3=30……②。把等式①代入等式②得，24+e=30，e=6。

  • 第7题：

    单选题
    在Excel中函数average（10，20，30，40）的返回值是（）
    A

    10

    B

    20

    C

    25

    D

    40


    正确答案： D
    解析： 暂无解析

  • 第8题：

    问答题
    At the eating contest the winner ate an average of 15 hot dogs at the first 20 sittings. After a further 20 sittings the average increased to 20 hot dogs. What was the average for the last 20 sittings?

    正确答案： 25.
    解析：
    前20轮共吃汉堡300个，40轮下来共吃汉堡800个，则后20轮吃汉堡500个，因此每轮吃25个。

  • 第9题：

    单选题
    Particular average is（）.
    A

    the average distance steamed per day over the duration of the voyage

    B

    charges against all parties in a marine venture to pay for damages

    C

    loss sustained by only one party

    D

    claimed after all liens against the vessel are settled


    正确答案： D
    解析： 暂无解析

  • 第10题：

    问答题
    A car traveled from A to B in 30 minutes. The first half of the trip was covered at 50 mph, and the second half at 60 mph. What was the average speed?400/11 - 500/11 - 600/11 - 700/11

    正确答案： 600/11 miles
    解析：
    这是一道计算题，我们设平均时速为X，则0.25X/50+0.25X/60=0.5，进而可得X=600/11，因此该选600/11。

  • 第11题：

    单选题
    Last year was the warmest year on record, with global temperature 0.68 ℃____ the average.
    A

    below

    B

    on

    C

    at

    D

    above


    正确答案： B
    解析：
    根据句意“去年是有记录以来最暖和的一年，全球气温都高于平局值0.68 ℃”，本题考查介词短语的搭配，above average意为“高于平均值”，故选D。

  • 第12题：

    单选题
    在Excel中，函数AVERAGE（6，10，20）的值为（）
    A

    10

    B

    11

    C

    12

    D

    13


    正确答案： D
    解析： 暂无解析

  • 第13题：

    翻译：With Average or With Particular Average（WA or WPA）（）


    正确答案:水渍险

  • 第14题：

    What will cause wireless voice devices to perform poorly？（）

    • A、average signal strength that is greater than -67 dBi
    • B、cell overlap of 15 to 20 percent
    • C、uneven wireless coverage
    • D、absence of coverage holes

    正确答案:C

  • 第15题：

    单选题
    The graph below represents the average points per game of a certain basketball player from 1995-2000. What is the percent increase over the 6-year period to the nearest hundredth of a percent?
    A

    18%

    B

    18.18%

    C

    20%

    D

    22%

    E

    22.22%


    正确答案： E
    解析：
    Divide the change in average points by the average points in 1995. Percent increase =(22-18)/18=4/18= 22.22%.

  • 第16题：

    单选题
    The average of a, b, c, and d is p. If the average of a and c is q, what is the average of b and d in terms of p and q?
    A

    2p+q

    B

    2p – q

    C

    2q +p

    D

    2q-p

    E

    (2p+q)/3


    正确答案： E
    解析：
    The average of a, b, c, and d is p, so (a + b + c + D./4 = p, or a+b+c+d = 4p. Similarly, since the average of a and c is q, then a+c = 2q, so b+d+2q = 4p. Since b+d = 4p - 2q, then (b +D./2 = 4p/2 - 2q/2 = 2p –q.

  • 第17题：

    单选题
    If the average of 8 and x is 10 and the average of 7 and y is 11, what is the average of x and y?
    A

    9.0

    B

    10.5

    C

    12.0

    D

    13.5

    E

    15.00


    正确答案： C
    解析：
    因为8和x的平均数为10，可得出(8+x)/2=10，x=12。又因为7和y的平均数为11，所以可得出7 + y = 22，y=15，所以x和y的平均值为(x+y)/2=(12+15)/2= 27/2=13.5。

  • 第18题：

    问答题
    If 10a + 10b =35, what is the average (arithmetic mean) of a and b?

    正确答案： 1.75
    解析：
    由10a+10b=35可得10(a+b)=35→a+b=3.5，所以a和b的平均数是3.5÷2=1.75。

  • 第19题：

    问答题
    At the beer-drinking contest the winner drank an average of 10 bottles of beer at the first 20 rounds. After a further 20 rounds the average increased to 15 bottles. What is the average for the last 20 rounds?

    正确答案： 20.
    解析：
    在前20轮中胜者平均喝10瓶酒，共喝200瓶。再过20轮后平均喝15瓶，即共喝了40×15=600瓶。故，后20轮喝了400瓶，胜者平均喝20瓶。

  • 第20题：

    单选题
    For married mothers, the time spend on child care increased to an average of 12.9 hours a  week in 2009.
    A

    For

    B

    spend

    C

    increased

    D

    an average


    正确答案： A
    解析：

  • 第21题：

    单选题
    If 70% of the bananas in a particular harvest had an average (arithmetic mean) length of 7 inches and 30% of the bananas in that harvest had an average (arithmetic mean) length of 5 inches, what was the average (arithmetic mean) length, in inches, of all of the bananas in the harvest?
    A

    6.0

    B

    6.2

    C

    6.4

    D

    6.6

    E

    6.8


    正确答案： B
    解析：
    假设共有100个香蕉，根据题干全部香蕉的长度为(100×70%×7)+(100×30%×5)=640英尺，共有100只香蕉，所以平均每只香蕉的长度为640/100=6.4。故选C。

  • 第22题：

    单选题
    The average (arithmetic mean) of five numbers is 10. The sum of three of the numbers is 30. What is the sum of the other two numbers?
    A

    5

    B

    10

    C

    20

    D

    30

    E

    40


    正确答案： C
    解析：
    The arithmetic mean of the five numbers is 10. That means the sum of the numbers is 50. The sum of three numbers is 30. so the sum of the remaining two numbers is 50-30 = 20.

  • 第23题：

    单选题
    According to the passage, which of the following is true of the last hundred years?
    A

    Fossil fuels were burned for the first time.

    B

    Greater amounts of land were cleared than at any time before.

    C

    The average temperature at the Earth’s surface has become 2℃ cooler.

    D

    The amount of carbon dioxide in the atmosphere has increased measurably.


    正确答案： D
    解析：
    文中第二段第二句表明，过去100年间，矿物燃料的燃烧和森林的砍伐使大气中二氧化碳的含量增加了大约15%，而且我们不断地向大气中排放二氧化碳，由此可以推断，A、B两项表述均不准确；由于大气中的二氧化碳在不断增加，因此地表温度只会升高，而不是降低，C项错误；因此只有D项符合文章大意。

  • 第24题：

    问答题
    What is the average (arithmetic mean) of x and y?　　(1) The average of x+3 and y+5 is 14.　　(2) The average of x,y and 16 is 12.

    正确答案： D
    解析：
    将两条件分别代入计算可知，x和y的平均数均为10，故本题选D项。

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