49 quả bạn nhé

Peter ate some candy seven tablets

Gọi:
Số kẹo Anna đã ăn là a
Số kẹo Mary đã ăn là b
Số kẹo Peter đã ăn là c
Theo bài ra ta có:
a + b + c = 22 (1)
a = 2 x b (2)
b < c < a (3)
Thay (2) vào (1) ta được: 
2 x b + b + c = 22
3 x b = 22 - c
3 x b = 21 + (1 - c) (4)
Vì 21 chia hết cho 3. Suy ra: (1 - c) chia hết cho 3
Vì (1 - c) chia hết cho 3, suy ra: c có thể nhận các giá trị là: 1, 4, 7, 10
Nếu c = 1 thì 3 x b = 21 + (1 - c) = 21. Suy ra: b = 7 (loại vì b > c)
Nếu c = 4 thì 3 x b = 21 + (1 - c) = 18. Suy ra: b = 6 (loại vì b > c)
Nếu c = 7 thì 3 x b = 21 + (1 - c) = 15. Suy ra: b = 5 (nhận)
Nếu c = 10 thì 3 x b = 21 + (1 - c) = 12. Suy ra: b = 4 và a = 2 x b = 2 x 4 = 8 (loại vì a < c)
Vậy: Số kẹo Peter đã ăn là 7 viên

Peter ăn 7 cái kẹo đó bạn

Nhớ kết bạn với mình nha

Tạm dịch:

1) Susan có một giỏ táo. Có ít hơn 50 quả táo trong giỏ. Nếu cô ấy đưa cho mỗi người bạn 8 quả táo thì cô ấy sẽ không còn quả nào. Nếu cô ấy đưa cho mỗi người bạn 9 quả táo thì cô ấy sẽ cần thêm 5 quả táo nữa. Có bao nhiêu quả táo trong giỏ?

2) Lớp 6 môn GMaths có số học sinh bằng bội số của 5 từ 10 đến 2000. Có bao nhiêu học sinh lớp 6 môn GMaths?

đề 1) sai

sai chỗ nào vậy?

1. Peter always gets mark 10 and Mary only gets mark 5 at Maths.

=> Peter __always get better marks than Mary__________

2. Nam can run farther than I can.

=> I ___can't run as fast as Nam____

3. Mr Binh drives more carefully than he used to.

=> Mr Binh ___used to drive more carelessly than now____

4. Apples are usually cheaper than oranges.

=> Apples ___aren't usually as expensive as oranges____

5. I haven’t got as much money as you.

=> You ______have much more money than me______

6. Have you got a cheaper bike than this?

=> Is this _____the cheapest bike ypu have______

7. She knows more about it than I do.

=> I ___don't know as much about it as she does_____

1. Peter always gets mark 10 and Mary only gets mark 5 at Maths.

=> Peter __always get better marks than Mary__________

2. Nam can run farther than I can.

=> I ___can't run as fast as Nam____

3. Mr Binh drives more carefully than he used to.

=> Mr Binh ___used to drive more carelessly than now____

4. Apples are usually cheaper than oranges.

=> Apples ___aren't usually as expensive as oranges____

5. I haven’t got as much money as you.

=> You ______have much more money than me______

6. Have you got a cheaper bike than this?

=> Is this _____the cheapest bike ypu have______

7. She knows more about it than I do.

=> I ___don't know as much about it as she does_____

Every morning, Mrs Hoa goes to the market. She goes (1) ……there…… to buy fresh fruits for her family. She buys apples for Linh and Nga. She always (2) ……tells………. them that apples keep them from (3 ) ……falling…….. sick. Mrs Hoa buys watermelon for her husband. He told her that he wants to put some watermelon seeds in the soil to grow watermelon plants. Then he can (4 ) ………have……… watermelons every day.

1. Where does Mrs Hoa go every morning?

…………She goes to the market ……………

2. What does she buy for her husband?

…………She buys watermelon for her husband………………

3. What did her husband tell her?

………He told her that he wants to put some watermelon seeds in the soil to grow watermelon plants………

4. Do you like watermelon?

…………Yes. I love it very much………….

Every morning, Mrs Hoa goes to the market. She goes (1) ……there…… to buy fresh fruits for her family. She buys apples for Linh and Nga. She always (2) ……buy………. them that apples keep them from (3 ) …being……….. sick. Mrs Hoa buys watermelon for her husband. He told her that he wants to put some watermelon seeds in the soil to grow watermelon plants. Then he can (4 ) ……………eat……… watermelons every day.

1. Where does Mrs Hoa go every morning?

à………………hoa  goes to supermarket every morning……………………………………

2. What does she buy for her husband?

à…………………………she buys watermelon………………………………

3. What did her husband tell her?

à………………… he wants to put some watermelon seeds in the soil to grow watermelon plants……………………………………

4. Do you like watermelon?

à…………yes i do…………………………

Every morning, Mrs Hoa goes to the market. She goes (1) ……there…… to buy fresh fruits for her family. She buys apples for Linh and Nga. She always (2) ……buy………. them that apples keep them from (3 ) …being……….. sick. Mrs Hoa buys watermelon for her husband. He told her that he wants to put some watermelon seeds in the soil to grow watermelon plants. Then he can (4 ) ……………eat……… watermelons every day.

1. Where does Mrs Hoa go every morning?

à………………hoa  goes to supermarket every morning……………………………………

2. What does she buy for her husband?

à…………………………she buys watermelon………………………………

3. What did her husband tell her?

à………………… he wants to put some watermelon seeds in the soil to grow watermelon plants……………………………………

4. Do you like watermelon?

à…………yes i do…………………………

Every morning, Mrs Hoa goes to the market. She goes (1) ……there …… to buy fresh fruits for her family. She buys apples for Linh and Nga. She always (2) ……tells………. them that apples keep them from (3 ) ……falling…….. sick. Mrs Hoa buys watermelon for her husband. He told her that he wants to put some watermelon seeds in the soil to grow watermelon plants. Then he can (4 ) ………have…………… watermelons every day.

falling /tells/ to /there /have

1 there 

2 tells

3 falling

4 have

Every morning, Mrs Hoa goes to the market. She goes (1) there to buy fresh fruits for her family. She buys apples for Linh and Nga. She always (2) tells them that apples keep them from (3 ) falling sick. Mrs Hoa buys watermelon for her husband. He told her that he wants to put some watermelon seeds in the soil to grow watermelon plants. Then he can (4 ) have watermelons every day.

falling /tells/ to /there /have

1. Phuong's brother is Nam

2. This house is the oldest house on the street.

3. How many apples would she like?

4. I have short curly hair.

5. Let's stay at home and play computer game tonight.

6. What about going to Ha Long bay next summer vacation.

câu trả lời của tôi: there are eleven apples.

There are eleven apples

there are eleven apples.