Mr.Joseph drives car from A to B at a constant speed. If the speed of the car is increased by 20%, it takes him one hour less than the usual time. If he drives at the constant speed for the first 100km before increasing the speed by 30%, it also takes him one hour less than the usual. The distance of AB is ..........km.
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6 tháng 1 2022 lúc 6:13
The route AB is 60km long. At 7 am, one motorbike travels from A to B with a constant speed. When this motorbike reaches B, it returns to A immediately with the speed increase by 10km/h and reaches A at 10.30 am at the same day. What is the original speed of this motorbike?
Note: You must write your answer in English.
Note: You must write your answer in English.
Exchange 2h30' = 2.5h
Let the real speed of the canoe be x (km/h) (x > 0)
=> Speed downstream: x + 8 (km/h)
Upstream speed: x-8 (km/h)
According to the arle we have (x+8).2 = (x-8).2.5 => 2x+16 = 2.5x - 20 => 0.5x = 36 => x = 72 (km/h)
=> distance from A to B = (72+8).2 = 160km
A car traveled at a constant speed for 5 hours, covering a total distance of 301 km. How far did the car travel for one hour?
The speed of the car is :
301 : 5 = 60,2 (km/h)
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là 60,2 mk chắc vì đó là đáp án violympic toán tiếng anh lớp 6
mk lm đúng
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A person travel from A to B at a constant speed v = 4 km / h. After he travelling \(\frac{2}{3}\) of the distance, he speed up 25% velocities. It takes 28 minutes to go A to B. The length of AB is.....
1.The Ford car left Hanoi for Nghe An and the Audi car left Nghe An for Hanoi at the same time. The ratio of their speeds (the Ford car to the Audi car) was 4:3. The Ford car decreased its speed by 25% and the Audi car increased its speed by 25% after they had passed each other. When the Ford car reached Nghe An, the Audi car was still 20 km away from Hanoi. The distance between Hanoi and Nghe An is .... km
2.The smallest value of A frac{x-y}{x^{4}+y^{4}+6} is.....
Đọc tiếp
1.The Ford car left Hanoi for Nghe An and the Audi car left Nghe An for Hanoi at the same time. The ratio of their speeds (the Ford car to the Audi car) was 4:3. The Ford car decreased its speed by 25% and the Audi car increased its speed by 25% after they had passed each other. When the Ford car reached Nghe An, the Audi car was still 20 km away from Hanoi. The distance between Hanoi and Nghe An is .... km
2.The smallest value of A= \(\frac{x-y}{x^{4}+y^{4}+6}\) is.....
A car traveled at a constant speed for 5 hours, covering a total distance of 301km. How far did the car travel for one hour?
(Write your answer by decimal in simplest form)
Answer:
dịch đề và giải lun nhé
Một chiếc xe di chuyển với một vận tốc không đổi trong 5 giờ, đi trên một quãng đường dài 301km. Hỏi trong một giờ chiếc xe đó đi được bao xa
Quãng đường mà chiếc xe đi được trong một giờ là
301/5=60.2km
tick cho mình nha
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The Ford car left Hanoi for Nghe An and the Audi car left Nghe An for Ha Noi at the same time. The ratio of their speeds (the Ford car to the Audi car) was 4 : 3. The Ford decreased its speed by 25% and the Audi car increased its speed by 25% after they had passed each other.
When the Ford car reached Nghe An, the Audi car was still 20km away from Hanoi. The distance between Hanoi and Nghe An is ...... km.
The Ford car left Hanoi for Nghe An and the Audi car left Nghe An for Ha Noi at the same time. The ratio of their speeds (the Ford car to the Audi car) was 4 : 3. The Ford decreased its speed by 25% and the Audi car increased its speed by 25% after they had passed each other.
When the Ford car reached Nghe An, the Audi car was still 20km away from Hanoi. The distance between Hanoi and Nghe An is ...... km.
5 tháng 2 2023 lúc 21:15
A car left from town A for Town B at 8:30 am and drove at a
constant speed of 80 km per hour. A little later, a truck left from
Town B for Town A at 9:15 am at a constant speed of 100 km per
hour. If they cross each other exactly at mid-way (mid-point) of the
route between town A and B, find the distance (in km) between Town A anhd Town B.
Một chiếc ô tô còn lại từ thị trấn A cho thị trấn B lúc 8:30 sáng và thả tại một
Tốc độ không đổi 80 km mỗi giờ. Một chút sau, một chiếc xe tải còn lại từ
Thị trấn B cho thị trấn A lúc 9:15 sáng với tốc độ không đổi 100 km mỗi
Giờ. Nếu họ vượt qua nhau chính xác ở giữa-polay (giữa) của
Tuyến đường giữa thị trấn A và B, tìm khoảng cách (tính bằng km) giữa thị trấn A AHD Town B.
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The Ford car left Hanoi for Nghe An and the Audi car left Nghe An for Ha Noi at the same time. The ratio of their speeds (the Ford car to the Audi car) was 4 : 3. The Ford decreased its speed by 25% and the Audi car increased its speed by 25% after they had passed each other.
When the Ford car reached Nghe An, the Audi car was still 20km away from Hanoi. The distance between Hanoi and Nghe An is ...... km.
