Bod buys three times as many apples as Peter. Mia buys 7 apples more than Bod and 19 apples more than Petet . How many apples do they buy togther ? Choose the correct answer.
a.26apples b.37apples c.49apples d.51apples
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27 tháng 2 2017
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
TG
19 tháng 10 2023
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?
15 tháng 9 2018
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_____
15 tháng 9 2018
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 tháng 3 2021
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………….
NN
1 tháng 3 2021
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…………………………
1 tháng 3 2021
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
NP
Ngô Phương
Admin
VIP
21 tháng 12 2022
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.
