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?

题目
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?
相似考题

1.在Excel中,若A1存有l,函数AVERAGE(10*A1,AVERAGE(15,0))的值是________。A.6B.7C.8D.9

2.Particular average is ______.A.the average distance steamed per day over the duration of the voyageB.charges against all parties in a marine venture to pay for damagesC.loss sustained by only one partyD.claimed after all liens against the vessel are settled

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

4.The company ____ its sales by an average of 10% per year since its establishment in 1993.A、increasesB、increasedC、is increasingD、has increased

参考答案和解析
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。
更多“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?”相关问题

  • 第1题：

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


    正确答案:水渍险

  • 第2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3题：

    The order entry department requested a report to display the average time to enter an order from each order entry clerk sorted by supervisor with a group average after viewing the report users requested to bold the value for each supervisors group average. Where would you make this change?（）

    • A、In the template used. 
    • B、In the data model. 
    • C、In the life previewer. 
    • D、In the field property palette.

    正确答案:C

  • 第4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5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6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7题：

    问答题
    In a supermarket, the aisles are numbered one to six from the entrance. Washing powder is next to bottles and it is not the first item you see when entering the supermarket. You will see the meat aisle before the bread aisle. Tins are two aisles before bottles and meat is four aisles after fruit. What is in the last aisle (aisle six)?

    正确答案： Bread.
    解析：
    根据题目可知：washing powder与bottles相邻，且不是第一个过道，meat在 bread之前，Tins后面第二个是bottles，fruit后面第四个是meat，又知meat在bread之前，也就是fruit后面第五个是bread，而共有六个过道，故可知第一个是fruit，最后一个是bread，进而可推出顺序为：1.fruit 2.tins 3.washing powder 4.bottles 5.meat 6.bread。

  • 第8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9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10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11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12题：

    单选题
    If the average (arithmetic mean) of a, b, 4, and 10 is 8, what is the value of a + b?
    A

    4

    B

    6

    C

    9

    D

    15

    E

    18


    正确答案： B
    解析：
    根据题干可得出(a+ b + 10 + 4)/4=8，a + b=18。

  • 第13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14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15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16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17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18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19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20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21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22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23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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