The length of the road between A and B is about 266 km

You can't read all the questions you want to ask, but the one above is okay.

Solution: Male athletes are 7 8 of female athletes, indicating that the total number of athletes participating in the competition is a multiple of 7+8=15.

So the total number of people is 15 17 = 255 people.

255 15 7 = 119 (person).

255-119 = 136 (people).

A: There are 119 male athletes and 136 female athletes.

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Solution: The speed of a bus is 3/4 of that of a car

Then the speed ratio of the bus and the car is 3/4:1 = 3:4 when they meet, the time is the same, and the distance ratio = speed ratio = 3:4 then the bus travels when they meet.

114 (km).

266-114 = 152 (km).

A: At the time of the meeting, the bus traveled 114 kilometers and the car traveled 152 kilometers.

Or like this.

The bus is OK.

266 (3/4+1) 3/4

266 7/4 3/4

114 (km).

The car is gone.

266-114 = 152 (km).

A: At the time of the meeting, the bus traveled 114 kilometers and the car traveled 152 kilometers.

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What is the problem of not seeing the shooting?

672 km. Suppose the distance between A and B is x kilometers, and the passenger car and truck meet after driving for the same time. Then there are equations.

7x/11÷x/8＝4x/11÷48

56/11＝x/11×12

x＝12×56

672 km.

Column equation solution application steps:

1. Practical problems (review the problem, and find out that the concession paragraph has the relationship between known and last known conditions and quantity).

2. Set the last known number to slip (generally set directly, sometimes indirectly), and use the disturbing algebraic formula of the last known number to express all the last known quantities.

3. Find the equation of the equivalence off.

4. Solve the equation and find other final conditions.

5. Test (test whether it is the solution of the original equation and whether it conforms to the practical significance).

6. Answer.

The length of the road between the two places is 436 km. Two cars, A and B, travel in opposite directions, car A travels 42 kilometers per hour and vehicle B travels 46 kilometers per hour. Car A drove for two hours, car B departed, and after another four hours, the two cars met;

The answer is as follows: The time of the encounter is:

436-42x2)÷(42+46)

4 hours. <>

The total distance is 270km

Set the speed of A x km/h B4 5x km/h.

x=60 So A 60 kilometers per hour and B 50 kilometers per hour.

Solution: It takes x hours for a passenger car to go from a place A to a place B from the highway, and it takes 2x hours to take an ordinary highway

2x+45=

x, the solution to the feast x=4

After testing, the root of the original equation of x=4, answer: it takes 4 hours for a passenger car to travel from a place A to a place B from the expressway.