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This question is in RUSSIAN

Bing Translation
Algebra and geometry
With one field collected by 45 TS wheat per hectare, and with another-35 centners per hectare. 1900c was collected. The following year, yields the first field has decreased by 20%, the second at 15%, and the yield fell to 330 c. find the area of each field.

Google Translation
Algebra and Geometry
From one field collected 45 quintals of wheat per hectare, and with another - to 35 quintals per hectare. Altogether, 1900ts. The following year, the first field yield decreased by 20%, second 15%, and the entire crop decreased by 330 p. Find the area of ​​each field.
NOTE: A quintal is a unit of weight equal to a hundredweight (112 lb) or, formerly, 100 lb.

There is a significant difference between these two translations.
Bing says that the yeild fell to 330 units and the google traslation says it decreased by 330 units. These mean different things. I am going to use the Google traslation. I think it makes more sense.

Hi Natalie,

20% of 45 = 9
45 - 9 = 36
So in the second year the first field collected just 36 quintals of wheat per hectare.

15% of 35= 0.15*35 = 5.25
35 - 5.25 = 29.75

1900-330 = 1570

So in the second year the second field collected just 29.75 quintals of wheat per hactare.
Let the first field be x hectares and the second field be y hectares
45x+35y = 1900
36x+29.75y = 1570
[NOTE: the 1900 and the 1570 are not correct].
These equations have to be solved simultaneously.
It is late and i am tired so I am going to do it the easy way and graph them.
It is not working because the units are not right. The ts and c have to be changed to quintals and I don't know what the converions is.
So, the 1900 and the 1570 are not the correct numbers to use.
Anyway, this is how to start the problem, maybe someone else will be able to help you some more.
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
Ссылок Перевод
Алгебра и геометрия
С одного поля собрали на 45 TS пшеницы с гектара , а с другой -35 центнеров с гектара . 1900C была собрана . В следующем году , дает первое поле снизился на 20% , второй на уровне 15% , а доходность упала до 330 в. найти площадь каждого поля.

Переводчик Google
Алгебра и геометрия
От одного поля собрали 45 центнеров пшеницы с гектара , а с другой - до 35 центнеров с гектара . В общей сложности , 1900ts . В следующем году , первый выход поле сократилось на 20% , второй 15%, и весь урожай уменьшился на 330 р . Найдите площадь каждого поля.
ПРИМЕЧАНИЕ:Центнер это единица массы равна центнер ( 112 фунтов) или , в прошлом , 100 фунтов

Существует значительная разница между этими двумя переводов.
Ссылок говорит, что получали методом упал до 330 единиц и Google traslation говорит она снизилась на 330 единиц . Они означают разные вещи . Я собираюсь использовать traslation Google . Я думаю, что это имеет больше смысла.

Привет Натали ,

20% 45 = 9
45 - 9 = 36
Так , во второй год первое поле собрано всего 36 центнеров пшеницы с гектара .

15% 35 = 0,15 * 35 = 5,25
35 - 5.25 = 29.75

1900-330 = 1570

Так , во второй год второе поле собрано всего 29,75 центнеров пшеницы на hactare .
Пусть первое поле будет х гектаров , а второе поле будет у га
45x +35 у = 1900
36x 29,75 у = 1570
[Примечание:1900 и 1570 не являются правильными ] .
Эти уравнения должны быть решены одновременно.
Уже поздно , и я устал , а я хочу сделать это легкий путь и график их .
Это не работает, потому единицы не правы . ТС и с должны быть изменены , чтобы центнеров , и я не знаю, что converions есть.
Таким образом, 1900 и 1570 не правильные номера для использования.
Во всяком случае, это , как начать эту проблему , может быть, кто-то сможет помочь вам еще немного.
Mar 16, 2014
 #72
avatar+118725 
+14
Hi all,
Today was extremely quiet - even considering that it was a Saturday/Sunday.
Anyway there were a couple of good answers from CPhill, Rom and guest. Thank you.
pas967 also answered a question correctly, thanks for that, but you gave no explanation so it probably didn't help any learning take place.
There were also nice thank you's from a guest and from 'Form one Malaysia'.
Form one Malaysia became a member today. Welcome to the forum, we hope that you like it here. I don't think that we have many members from Malaysia.

It is common for answerers to become frustrated by the lack of effort shown by many people who ask questions.
I often answer question in great detail BUT to some extent I do agree with 'I like Serena'. Sometimes less is better.
Students should be encouraged to use the formulary page or google to find formulas etc. We usually answer quite quickly so I think that it would be very appropriate to ask students to go away and come back with a little more input - such as a formula and/or an explanation of why they are having difficulties. Even if we are given this input it is still not necessary for us to answer questions in full. The student will learn better if they have to do some of it themselves. I guess I am saying that we should be offering guided learning rather than just answers.
If you want to answer in full, that is fine. I know that I will sometimes. I just want you to think about possible alternatives.

Thanks everyone,
Melody.
Mar 16, 2014
Mar 15, 2014

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