Two men went first person to go from A to B
The second person to go from A to B. After 1 hour 20 minutes, then meet. Count V1 know
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MN
23 tháng 7 2020
Một giờ người thứ nhất làm được \(1:\frac{2}{5}\) = \(\frac{5}{2}\left(cv\right)\)
=> 12 min người thứ nhất làm được \(\frac{5}{2}.\frac{1}{5}\)=\(\frac{1}{2}\left(cv\right)\)
Số phần công việc còn lại: \(1-\frac{1}{2}=\frac{1}{2}\)
Người thứ hai làm một mình hết: \(1:[(\frac{1}{2}:\frac{1}{9})-\frac{5}{2}]\) =\(\frac{1}{2}\) (h)
10 tháng 1 2018
Đáp án: A
Giải thích: Dựa vào câu: “In the water-fetching contest one person from each team had to go to the river to get the water.”.
Dịch: Trong cuộc thi lấy nước, một người từ mỗi đội phải đi ra sông lấy nước
DT
Đỗ Thanh Hải
CTVVIP
29 tháng 10 2021
1.I went to the cinema every week when I was a student. Now I hardly ever go.
_I used to go to the cinema a lot.
2.William paints every day. He never did this before.
William didn't_ use to paint every day.
3. I drank fizzy drinks all the time when I was younger. Now I never drink them.
I used to drink_ fizzy drinks.
4. These days she reads a lot. In the past she read very little.
She didn't use to_ read much.
5. I recognise that woman. Did she live near us?
Did _she use to live near us?
6. When I was young, I played the guitar, violin, drums and flute. Now I don't play anything.
I used to play_ lots of musical instruments.
7. I remember your cousins. Did they visit you regularly years ago?
_Did your cousins use to stay with you?
8. My father always called me 'Princess' when I was a child. Now he calls me by my real name.
My father _used to call me 'Princess' when I was little.
9. I hated classical music when I was a teenager. Now I love it.
I didn't use to_ like classical music.
10. When I was younger, I was a teacher. Now I am a tour guide.
I used to be_ a teacher.
