A passenger car and a freight car leave from two places at the same time. When they meet, the passenger car travels 60 kilometers more than the freight car. It is known that the speed of the freight car is four fifths of that of the passenger car. The distance between two places should be calculated

The speed of a freight car is four fifths that of a passenger car
So when we meet, the journey of freight cars is also 4 / 5 of that of passenger cars
Therefore, when we meet, the bus travel 60 / (1-4 / 5) = 300 km, and the truck travel 300-60 = 240 km
Therefore, the distance between the two places is 300 + 240 = 540 km
The passenger cars and freight cars leave from AB and ab at the same time. They meet in 4.5 hours. When they meet, the passenger cars travel 27 kilometers more than the freight cars. The speed of the freight cars is 5 / 4 of the speed of the passenger cars
(5 / 4), how many kilometers are AB and ab together?
Passenger cars are faster than freight cars. The speed of freight cars should be 4 / 5 of that of passenger cars,
Then, when they meet, the passenger car takes 1 △ 1 + 4 / 5 = 5 / 9 of the whole journey, and the freight car takes 1-5 / 9 = 4 / 9 of the whole journey,
It can be concluded that the distance between AB and ab is 27 (5 / 9-4 / 9) = 243 km
There is something wrong with your subject. Logic error.
Whether the bus is fast or the truck is fast, "when meeting, the bus travels 27 kilometers more than the truck" - it should be the bus.
But then he said, "the speed of a freight car is 5 / 4 of that of a passenger car" - which means that a freight car is fast
So it's contradictory. You might as well change the title to 1:
The passenger cars and freight cars leave from AB and ab at the same time. They meet in 4.5 hours. When they meet, the passenger cars travel 27 kilometers more than the freight cars. The speed of the passenger cars is 5 / 4 of the speed of the freight cars
Why did he travel 27km more? It's because he's faster than the truck... To spread out
There is something wrong with your subject. Logic error.
Whether the bus is fast or the truck is fast, "when meeting, the bus travels 27 kilometers more than the truck" - it should be the bus.
But then he said, "the speed of a freight car is 5 / 4 of that of a passenger car" - which means that a freight car is fast
So it's contradictory. You might as well change the title to 1:
The passenger cars and freight cars leave from AB and ab at the same time. They meet in 4.5 hours. When they meet, the passenger cars travel 27 kilometers more than the freight cars. The speed of the passenger cars is 5 / 4 of the speed of the freight cars
Why did he travel 27km more because he was faster than the truck? 5 / 4-1 = 1 / 4 of "truck speed"
That's 4.5 hours. That's 27 kilometers
27÷4.5=6KM/h
6KM/h ÷1/4=24KM/h
24km / h * 4.5 = 108km / h
How many hours does it take for a car to complete the journey
How many hours does it take for a car to travel from a place 325 kilometers away to B place in two hours? (using proportional solution), and now it's time to travel
It takes x hours to complete the whole process
325：130=X：2
130X=325×2
130X=650
X=650÷130
X=5
A: it takes 5 hours to complete the whole journey
If you don't understand, you can ask~
Weimin supermarket has a shampoo with the original price of 24 yuan per bottle. Now we are promoting sales. If we buy two bottles at a time, how much cheaper is it than the original price
24 × 2 = 48 yuan
1 = 2 = 3 (bottle)
48 △ 3 = 16 (yuan)
24-16 = 8 yuan
A: each bottle is 8 yuan cheaper than the original one
The distance between the two places is 360 km. A and B start from the two places at the same time and travel in opposite directions for 3 hours. The speed ratio of a and B 2 cars is 7:5. How many kilometers does a car travel per hour
Set a car to travel x kilometers per hour
（X+5X/7）*3=360
The solution is x = 70
A: car a travels 70 kilometers per hour
Let the velocity of a be V1 and the velocity of B be V2, then V1 = 7 / 3 * v2
Determinant (V1 + V2) * 3 = 360
Substituting V2 = 36km / h, V1 = 84km / h
Using 4 numbers of 2, - 4, 12 and 1, the mixed operation of rational numbers makes the result equal to 24
(2+1)×(-4+12)=24
At present, 46 tons of drought resistant materials are transported to the disaster area by two kinds of transport vehicles. The vehicle weight of type A is 5 tons, and that of type B is 4 tons. If there are no more than 10 vehicles, how many vehicles should type a transport vehicle arrange at least
There should be at least X type a transport vehicles and (10-x) type B transport vehicles
46≤5x+4（10-x）
The solution is x > 6
Answer: a kind of transport vehicle should arrange 6 at least
There are 216 people in grade five who buy 16 cases of mineral water, just one bottle for each person. How many bottles are there in each case?
If the answer is decimal, add a sentence to the answer: this question is wrong
Set up a box of X bottles
16x+16*2=216
16x=216-32
16x=184
x=11.5
Sure enough, I was wrong and asked me if I knew
The two cars leave each other and meet three hours later. The distance between the two places is 174 kilometers. How many kilometers does a car travel 30 kilometers and B car travel
To solve by equation and arithmetic
Vehicle B speed = 174 △ 3-30 = 28 km / h
B: 174km-30km = 144km
If it helps you, please remember to adopt it_ Thank you
Line B = 174 △ 3-30 = 58-30 = 28 km / h
If vehicle B travels x kilometers per hour, there will be
3(30+x)=174
x=28
Brief answer
My problem is that the equation is well solved
170÷3-30＝28
The mixed operation of rational numbers is multiplication first, multiplication and division, then addition and subtraction, if ()
If there is (), count in () first
Mixed operation of rational numbers
1: First make the brackets, first the small brackets, then the middle brackets, then the big brackets;
2: The operation of power;
3: Do multiplication and division;
4: Add and subtract.
If there is () in () first

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