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Hello, I am happy to answer for you, from the question you can know that the railway station is 855km away from Huashan. The average speed of the train is 95 km/h. Therefore, first divide 855 by 95 is equal to 9, that is to say, it takes 9 hours from the railway station to Huashan, but it stops for 45 minutes on the way, so it takes 9 hours and 45 minutes to Huashan, and because it is 9 o'clock in the morning, 9 o'clock plus 9 hours and 45 minutes of the journey can be concluded:

Arrive at 6:45 p.m. and 6:45 p.m.

From the title, it can be seen that the railway station is 855km away from Huashan. The average speed of the train is 95 km/h. Therefore, first divide 855 by 95 is equal to 9, that is to say, it takes 9 hours from the railway station to Huashan, but it stops for 45 minutes on the way, so it takes 9 hours and 45 minutes to Huashan, and because it is 9 o'clock in the morning, 9 o'clock plus 9 hours and 45 minutes of the journey can be concluded:

Arrive at 6:45 p.m. and 6:45 p.m.

It's very simple 855 95 = 9 hours, plus 45 minutes of stopover, that is, 9 hours and 45 minutes later! Arrived at 6:45 p.m. (18:45).

855 95 = 9 hours.

9 hours + 45 minutes = 9 hours 45 minutes.

9 a.m. + 9 hours 45 minutes = 6:45 p.m.

A: Ming Ming's family arrived at Huashan at 6:45 p.m.

Distance divided by speed = time, 855 divided by 95 = 9, plus 45 minutes of stopping on the way, a total of 9 hours and 45 minutes, time to arrive = 9 + 9 hours and 45 minutes = 18:45

The time taken is 855 95 = 9 (hours) plus 45 minutes of rest. 9 + 9 = 18 (points), that is, 6 p.m.;

6 a.m. + 45 minutes = 6:45 a.m. Arrive at the station at 18:45.

855 95 = 9 hours.

9 o'clock + 9 hours = 18 (points).

18:45 + 45 (stop) = 18:45, that is, you can arrive at 6:45.

855 95 = 9 hours.

9 + 9 = 18 (points), that is, 6 p.m.;

6 a.m. + 45 minutes = 6:45 a.m.

The time taken is 855 95 = 9 (h) plus 45 minutes of rest, arriving at the station at 18:45.

9 hours and 45 minutes.

6 hours and 45 minutes in the afternoon.

855 95 = 9 o'clock 9 o'clock + 45 minutes = 9:45 minutes 9 + hours = 18:45 minutes.

855 95 = 9 hours.

9 + 9 = 18 (points), that is, 6 p.m.;

6 points + 45 points = 6 points 45 points.

9 hours, the arrival time should be 18:45

855 95 = 9 hours.

9 hours + 45 minutes = 9 hours and 45 minutes.

9 hours 45 minutes + 9 hours = 18 hours and 45 minutes.

855 95 = 9 hours.

In addition to 45 points.

It is 18:45.

Solution: If a train travels 246 kilometers in 3 hours, the speed is 246 3 = 82 kilometers per hour;

Time from Chengdu to Beijing = 2048 82 25 hours.

2048 (246 3) 25 (hours).

It takes about 25 hours.

Seek speed first.

v=246km/3h=82km/h

Then find the time. t=2048km/82(km/h)=1024/41h

The difference between three cups of water and five cups of water is 600-440 = 160 grams, so two cups of water is 160 grams, and one cup of water is 160 2 = 80 grams.

Three cups of water with a bottle weigh a total of 440 grams "It is known that a glass of water weighs 80 grams, and three cups of water are 80 3 = 240 grams, and the rest is the weight of the bottle, so the weight of the bottle is 440-240 = 200 grams.

Dear, there are more words, I don't know if I can understand the pinch? When you encounter this kind of problem in the future, you have to think more about it The more you use it, the more flexible your brain becomes

I wish you progress in your studies and success in all your wishes

1 cup water; (600-440) (5-3) = 80 (grams).

The weight of an empty bottle: 440-80x3 = 200 (g 0

600-440=160 (grams) Find the mass of 2 cups of water first.

160 2=80 (grams) Find the quality of another glass of water.

So 440-80 3 = 200 (g) empty bottle mass.

A: A glass of water weighs 80 grams, and an empty bottle weighs 200 grams.

Hope it helps.

A glass of water weighs = (600-440) (5-3) = 160 2 = 80 (grams).

An empty bottle weighs = 440-3 80 = 440-240 = 200 (grams).

600-440 = 160 (grams) Find the mass of 2 cups of water.

160 2 = 80 (grams) mass of a glass of water.

So 440-80 3 = 200 (g) empty bottle mass.

A: A glass of water weighs 80 grams, and an empty bottle weighs 200 grams.

Hope it helps.

600-440=160 is the net weight of two glasses of water.

A glass of water weighs: 160 2 = 80 grams.

80*3=240 grams.

Empty bottle weight: 440-240 = 200 grams.

600-440) (5-3) = 80 440-3 80 = 600-5 80 = 200, so the cup weighs 200 grams and the water weighs 80 grams.

A glass of water weighs (600-440) 2=80

An empty bottle weighs 440-3*80=200

Especially in the middle and lower grades of elementary school, there are many mathematical methods that have not been handed in, what unknowns, and the exchange of equal signs and left and right numbers......Children rarely have tools to use, so it's best to use addition and subtraction if they can.

I'm glad your question is so simple I'm still having a headache about the knowledge of junior high school Hehe will help you answer by the way The total distance is 100 kilometers divided by 2 hours The average speed is 50 kilometers per hour!

700 meters. The rabbit runs 33 meters per minute, and the rabbit stops and sleeps for 20 minutes after running for one minute.

That's 21 minutes, and the rabbit ran 33 meters, and the tortoise ran 63 meters.

30 meters apart.

When catching up with the turtle scum.

33-3)x=30 then x=1, i.e., 1 minute later, chase the turtle and sneak on.

At this time, 22 minutes had passed, and the tortoise and rabbit had run a total of 66 meters.

700-66=634 meters from the finish line.

Gap = 3 * (1 + 20) - 33 * 1 = 63 - 33 = 30 meters such as leakage;

Time resistance to aquaria = 30 (33-3) = 1 cent;

Distance = 700 - (1 + 1) * 33 = 700 - 66 = 634 meters.

20+1)*3=63(m) 33*1=33(m) Solution: Let x divide the matter Chang this bell rabbit catches up with the cover of the tortoise. 33x-3x=63-33 30x=30 x=1 63+3=66(m) 700-66=634(m) A····

If a person knows the information before hitting **, then this person A can let another person A also know the information by hitting ** separately.

After each call, the number of people who know the information is twice as high. (if the number does not exceed 36) 1 person with known information in the initial state.

After the 1st minute, there are 2 1=2.

After the 2nd minute, there are 2 2 = 4.

After the 3rd minute, there are 2 4 = 8.

After the 4th minute, there are 2 8 = 16.

After the 5th minute, there are 2 16 = 32.

You'll know when you learn the proportional sequence.

After the nth minute, 2 n people knew the information.

This is the ...... we learned in sixth grade

32 grace ......[Believe me, I'm in my third year of junior high school.

Do you want to calculate the process specifically? The answer should be 32 people.