A car consumes 12l of gasoline every 100km. How many liters of gasoline does the car consume if it travels a distance of 250km?
A car consumes 12l of gasoline every 100km. How many liters of gasoline does the car consume if it travels a distance of 250km?
A car consumes 12l of gasoline every 100km. How many liters of gasoline does the car consume if it travels a distance of 250km?
Answer: liters.
số lít xăng chiếc xe tiêu thụ khi đi quãng đường 50 km là:
12:2=6 (l )
sô lit xăng chiếc xe tiêu thụ khi đi quãng đường 250 km là:
12x2+6=30 (lit)
đáp số:30 l
Câu 3:
Calculate: 4m 40cm + 3m 20cm = cm
Câu 4:
of is
Câu 5:
There are 9 boxes of apples. Each box contains 35kg. If we take away 172kg from these boxes, how many kilograms of apples are left?
Answer: kilograms.
Câu 6:
A tank contained 414l of honey, of this amount was taken away. How many liters of honey are left?
Answer: liters.
Câu 7:
The first box contains 350kg of strawberries. The second box contains 50kg of strawberries more than the first one does. How many kilograms of strawberries do the two boxes contain?
Answer: The two boxes contain kilograms of strawberries.
Câu 8:
A car consumes 12l of gasoline every 100km. How many liters of gasoline does the car consume if it travels a distance of 250km?
Answer: liters.
Câu 9:
Look at this sequence: 0; 2; 4; 6; 12; 22;
What number should come next?
Answer:
Câu 10:
Calculate:
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.
Gọi S là quãng đường
v là vận tốc
t là thời gian Mr.J đi thường ngày
=>\(\dfrac{S}{120\%v}=t-1\)
\(\dfrac{100}{v}+\dfrac{S-100}{130\%v}=t-1\)
=>\(\dfrac{S}{120\%v}=\dfrac{100}{v}+\dfrac{S-100}{130\%v}\)
<=>\(\dfrac{130S}{156v}=\dfrac{15600+120S-12000}{156v}\)
<=>\(10S=3600\)
<=>\(S=360\)
Xong rầu đó khỏi cảm ơn
Problem 8. A cuboid container has dimensions as in the figure. The container has 54 liters of water in it. Bình wants to know a full bucket contains how many liters of water, so he pours the whole bucket of water into the container and finds that the level of the water is now 7 8 the height of the container. From that, he is able to calculate how many liters of water a full bucket contains. If the container is empty, how many buckets of water must Bình pour into the container to make it full?
Vấn đề 8. Một container có hình khối có kích thước như trong hình. Các thùng có 54 lít nước trong đó. Bình muốn biết một xô đầy chứa bao nhiêu lít nước , do đó, ông đổ cả xô nước vào container và thấy rằng mức độ của nước tại 7 8 là chiều cao của container. Từ đó, ông có thể tính toán bao nhiêu lít nước một xô đầy chứa . Nếu container rỗng , bao nhiêu xô nước phải Bình đổ vào các container để làm cho nó đầy đủ?
To solve this problem, let's break it down step by step.
Step 1: Calculate the volume of the cuboid container.
The volume of a cuboid is given by the formula:
Volume = Length × Width × Height
Given:
Length = 12 meters
Width = 6 meters
Height = 4 meters
Volume = 12 × 6 × 4 = 288 cubic meters
Step 2: Convert the volume to liters.
Since 1 cubic meter = 1000 liters, we have:
Volume = 288 × 1000 = 288,000 liters
Step 3: Determine the volume of water after pouring a full bucket.
The water level after pouring the bucket is at 7/8 the height of the container, which means the volume of water is 7/8 of the volume of the container.
Volume of water = (7/8) × 288,000 liters = 252,000 liters
Step 4: Calculate the volume of water in one bucket.
Since initially, there were 54 liters in the container and after pouring the bucket, there were 252,000 liters, the volume of water in one bucket can be found by subtracting the initial volume from the final volume.
Volume of water in one bucket = 252,000 liters - 54 liters = 251,946 liters
Step 5: Determine how many buckets are needed to fill the container.
To find out how many buckets are needed to fill the container, divide the volume of the container by the volume of water in one bucket.
Number of buckets needed = 288,000 liters / 251,946 liters ≈ 1.144
Since Bình cannot pour a fraction of a bucket, he would need to pour 2 buckets of water to fill the container completely.
A car travels 170 km at a speed of 42,5 km/h . Find the time car takes to cover this distance .
Distance to car travel time is:
170:42,5=4(km/h)
answer:4km/h
Tom has a new set of golf clubs. Using a club 8, the ball travels an average distance of 100 meters. Using a club 7, the ball travels an average distance of 108 meters. Using a club 6, the ball travels an average distance of 114 meters. How far will the ball go if Tom uses a club 5?
The first bucket has 40 liters of water, the secgáond bucket has 15 more liters than the first bucker. How many liters of water does the second bucker have?
Answer: The second bucker has ? liters of water.
The second bucket has liters of water :
40 + 15 = 55 ( l )
Answer : 55 ( l )
At 8:24 AM,a motorbike travels from A to B at a speed of 36 km/h.At 9:00 AM,a car travels from A to B at a speed of 54km/h and is able to catch up with the motorbike at B.Find the distance from A to B in kilometers.
Dịch : Lúc 8 giờ 24 phút,một chiếc xe máy đi từ A đến B với vận tốc 36 km/h.Lúc 9 giờ,một chiếc ô tô đi từ A đến B với vận tốc 54 km/h và đuổi kịp xe máy tại B.Quãng đường AB dài bao nhiêu km ?
Giải : Xe máy đi trước ô tô : 9 giờ - 8 giờ 24 phút = 36 phút = 0,6 giờ
Khi ô tô khởi hành thì 2 xe cách nhau : 36 x 0,6 = 21,6 (km)
Hiệu vận tốc 2 xe là : 54 - 36 = 18 (km/h)
Ô tô đuổi kịp xe máy sau : 21,6 : 18 = 1,2 (giờ)
Quãng đường AB là : 54 x 1,2 = 64,8 (km)
Thời gian xe máy đi trước ô tô là:
9 giờ - 8 giờ 24 phút = 36( phút )
Đổi : 36 phút = 0,6 giờ
Khi ô tô khởi hành thì 2 xe cách nhau là:
36 x 0,6 = 21,6 ( km )
Sau mỗi giờ , ô tô đi hơn xe máy là:
54 - 36 = 18 ( km )
Thời gian ô tô đuổi kịp xe máy là:
21,6 : 18 = 1,2 ( giờ )
Quãng đường AB dài là:
54 x 1,2 = 64,8 ( km )
Đáp số: 64,8 km