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Sau ngày đọc thứ nhất, phân số chỉ số trang còn lại là:
1 - 2/7 = 5/7 số trang
Phân số chỉ số trang đọc ngày thứ hai là:
5/7 x 9/20 = 9/28 số trang
44 trang ứng với:
5/7 - 9/28 = 11/28 số trang
Số trang của quyển sách là:
44 : 11/28 = 112 trang
Đáp số : 112 trang
P/số chỉ số trang sách ngày thứ 2 đọc đc là
\(\left(1-\frac{2}{7}\right).\frac{9}{20}=\frac{9}{28}\)(tổng số trang)
P/số chỉ số trang sách ngày thứ 3 đọc đc là
\(1-\frac{2}{7}-\frac{9}{28}=\frac{11}{28}\)(tổng số trang)
Quyển sách Hoa đọc đc có số trang là
\(44:\frac{11}{28}=112\)(trang)
Đ/số : 112 trang
Ủng hộ mk nha,chúc bn học tốt!!
1 . There are five people in Nam's family.
2 . His father, his mother, his brother, his sister and Nam .
3 . They live on Nguyen Trai street .
4 . His father is forty - five years old .
5 . His father is an engineer.
6 . No, she is itn't . She is a doctor .
7 . Nam is twenlve years old.
8 . He is a student .
1.What are they ?
2.What is this ?
3.What is his sister's name ?
4.What is your name?(nếu hỏi tuổi thì là How old are you ?)
5.What does your mother do ?
6.Where is the student ?
7.How many lamps in the room?
8.Who is that ?
9.How many students are there in your class ?
10.Are there your book?
ủng hộ mk nha
- Our friends are playing in the garden
- Mr Tan is working in his room
- Linh and quang are studying in the classroom
- It's ten to ten
1, Who I have a look
2, My brother likes is sing French songs because he lived in France
3, How street does your mother go jogging
5, What is there is eat for dinner every day
6, our class is going to visit ha noi capital next month
7, I can hear with my ears
8, It 's time for you to go to school
1, can
3, often
5,to
6, month
7,with
8,to
4,2 ... ... ... ????
1 our club has 50 members
2they are beautiful flowers
3tom travels every morning for work
4nam is huong's brother
5k pit
6does your school has 5 floors?
7my town doesn't have any temple
8my father goes to work everyday by his motorbike
9lan goes to school on foot
1. What is it?
2. How many rooms are there in your house?
3. When do we have math?
4. How often does your family go to the cinema? ( Ở câu này "my family" là số ít nên bạn phải chia "goes" nhé )
5. Is that her hat?
6. Where are your friends playing? ( Nếu "Our friend" bạn chia "are" thì phải là "our friends" nhé )
7. What is Tan doing in his room?
8. What time is it?
9. How does Mr. Nam go to work everyday?
10. What is Linh doing at the moment?
11. What does her brother do?
12. When does Lan have history?
1) What is it?
2) How many rooms are there in your house?
3) What subject do you have on Monday? / When do you have math?
4) How often does your family go to the cinema?
5) Is this your hat?
6) Who are playing in the school yard?
7) What is Tan doing in his room?
8) What time is it?
9) How does Mr Nam go to work every day?
10) What is Linh doing at the moment?
11) What does her brother?
12) What subject does Lan have on Thursday?