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All the students in Grade 6 of the third primary school donated money to the earthquake stricken areas. Girls contributed more than 360 yuan for 50% of the whole year and donations, while boys contributed 2 / 3 of the girls. How much money did grade 6 donate to the earthquake stricken areas?
Set up a donation of X Yuan for girls and 2 / 3x yuan for boys
x+2/3x=2（x+360）
-1/3x=-720
x=2160
Male + Female donation = 2160 + 2160x2 / 3 + 3600 yuan
It's like this. You can see for yourself
Three students donated 284 yuan to the Wenchuan earthquake stricken area. It is known that the money ratio of Li Ming to Zhang Ping is 5:6, and that of Zhang Ping to Wang Hong is 8:9,
How many yuan each of the three students donated
The money ratio of Li Ming and Zhang Ping is 5:6 = 20:24
The money ratio of Zhang Ping and Wang Hong is 8:9 = 24:27
Donation ratio of three people = 20:24:27
Li Mingjuan 284 * (20 / 20 + 24 + 27) = 80 yuan
Zhang Ping donated 284 * (24 / 20 + 24 + 27) = 96 yuan
Wang Hong donated 284 * (24 / 20 + 24 + 27) = 108 yuan
The school organized students to donate 4300 yuan to the Wenchuan earthquake stricken area in Sichuan Province. Three classes in Grade 6 donated 4300 yuan in total. The amount of money donated by class 2 was 3 / 4 of that of class 1, and that donated by class 3 was 1
2 / 5 of the class, how much is the donation of class one?
Set up a class and donate X Yuan
x+3x/4+2x/5=4300
(20+15+8)x/20=4300
X = 4300 * 20 / 43 = 2000 (yuan) answer
Selection of congruent triangles
Congruent triangle is a more difficult problem. It has a graph and a method. It's better to explain why we do it, that is, why we need to make auxiliary lines and why we need to start from here. We often know that we need to make auxiliary lines and we don't know how to do it. Is there any method
Auxiliary line I don't know if your math teacher has handed in any information. If you have, then you are recommended to do exercises. The progress will be very fast. You still need to do exercises to find feelings. You can also find the real problems over the years
How to write 40 in English
forty
Who do you work for
What's your salary for working for yourself? To work for yourself may be to witness or hear the fact that your parents or others have been ruthlessly dismissed by the boss. Today's young people tend to see the society as colder and more severe than the previous generation, so they are more realistic
After 23 became 812, the original score increased four times______ Reason:______ ．
23 becomes 812, that is 38 = 3 × 48 × 4 = 812. According to the basic property of fraction, the numerator and denominator of fraction multiply by 4 at the same time, and the size of fraction remains unchanged. So the statement of stem is wrong; so the answer is: wrong, the numerator and denominator of fraction multiply or divide by the same number (except 0), and the size of fraction remains unchanged
How to solve the equation x + (12-x) = 58?
x+(12-x)=58
x+12-x=58
12=58
No solution, is it wrong
1+2+3+4+5+6+…… +98+99+100-50=
=5000
Take a triangle ruler, draw its outline on a large piece of paper, and then fold it outward along each side of the triangle ruler, and draw its outline at any time. What kind of pattern will you get?
Answer: circle
Because constantly turning outward is equivalent to rotating around a vertex, and finally it must be a circle
RELATED INFORMATIONS
- 1. Last year, Xingfu road primary school donated 6320 yuan to the Wenchuan earthquake stricken area. The sixth grade students donated 32 yuan as much as the fifth grade students. How much did the fifth grade students donate?
- 2. After the earthquake in Yunnan Province, teachers and students of our school enthusiastically donated money. In the past six years, more than 160 yuan was donated by female students, accounting for 40% of the whole class, while 23 yuan was donated by male students?
- 3. A primary school donated 6800 yuan to five classes of grade six in the activity of "giving love - donating money to Wenchuan disaster area". Among them, class one donated 1500 yuan, and class two donated less than class one The donation is 200 yuan. The donation of class three is 20% of the total amount of the grade. The ratio of donation of class four to class five is 19:21?
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- 12. In the tree planting activity in March, there are 10 trees less than twice. How many trees do the students of grade 5 and 6 plant each
- 13. There are 56 students in Grade 6 of Houcun primary school, of which 37 are boys. Later, they were transferred to several male students. At this time, male students account for 715% of the class. How many male students were transferred?
- 14. There are 56 students in class 61, of which three seventh are boys, and then several girls are transferred. At this time, girls account for three fifths of the class
- 15. There are 56 students in class 1 of grade 6. The number of girls is 3 / 4 of that of boys?
- 16. There are 56 students in class 5 (4) of the school. The number of girls is three fifths of that of boys. How many boys are there?
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