719 kilometers from A to B, 5 hours and 56 minutes, what is the average number of kilometers per hou

5:56 a.m. 6 a.m.

719 6 120 kmh

Think: 719 720

Then, 719 6 720 6 = 120

A: Approximately 120 kmh on average.

That's about 120 km/h.

Find the average speed of the whole journey and divide the total distance by the total time

That is, v=s t=719 (5+56 60)= can also be calculated as 6 hours, v=719 6=119km h can be regarded as 120km h.

The average speed is:

719x15/89

Kilometers in hours (with two decimal places).

A: Approximately an average of kilometers per hour.

This problem is very complicated to calculate directly, and since the answer is to find the approximate average, it can be easily calculated with a divisor.

719 720 km.

5:56 a.m. 6 a.m.

720 6 = 120 km h.

The approximate average speed from A to B is 120 km/h.

5 hours 56 minutes = 356 minutes.

719 356 = km) km).

km) A: Approximately average kilometers per hour.

Solution: Perform unit conversion first.

Distance = 21 km = 21,000 m.

Speed = distance time.

m minutes. A: Walk about meters per minute.

The answer is as follows: 21 km = 21,000 m.

Distance traveled per minute = total distance traveled time.

m minutes. Approximately meters per minute.

I don't know what the process is like, so I can only get the average speed. v=s t, and the value is 21 67=km minutes. That's about 313 meters per minute.

The distance between the two places is 975 kilometers, and after 12 hours there are 195 kilometers left, and in these 12 hours it is 780 kilometers, 780 12

The speed of the line is 65 kilometres per hour, 195 65 = 3, and the remaining 195 kilometers will take 3 hours, 975 65

The whole journey of 975 kilometers takes 15 hours

From A to B, if you walk 4 kilometers per hour, you can reach it in 6 hours. The distance between A and B is 24 km, and if you ride a bicycle, you can travel 8 km per hour, which takes 3 hours to reach.

3 (hours) A: It takes 3 hours to arrive.

It is 720 kilometers from A to B, and it takes 6 minutes to go back and forth.

Illustrated 6 minutes to walk 2 720 km, 720x2 6

240 (km).

Kilometers become meters, 240 kilometers = 240,000 (meters).

A: You can walk 240,000 meters per minute.

Are you sure it's 720 kilometers away?

It must be 720 meters.

Then the round trip is 720*2=1440 meters.

Divide by the time 6 minutes.

Get 1440 6 = 240 meters per minute walked.

According to the meaning of the title, A and B are walking in opposite directions, and 1 hour after A departs, A and B are 490 1 40 450 kilometers apart;

At this time, the two were 450 kilometers apart and walked in the opposite direction

450 (60+40) hours).

Solution: Shijia walked for x hours.

There are two scenarios:

1. A and C have not met.

12x=72

x = 6 A walked 6x7 = 42km

Second, A and C have met.

9x=72x=8A walked 8x7=56km

Set up x hours to meet the requirements of the topic.