Original title: The branches of Ai Xin Tent Group are located in cities A and B respectively. These two factories used to produce 9000 tents every week, but now there are 14000 tents in an earthquake-stricken area. The team decided to produce these tents within a week. Therefore, all staff worked overtime, and within one week, the tents made by the general factory and the branch factory reached 1.6 times and 1.5 times respectively, which just completed this task.

1. How many tents were produced by the main factory and the branch factory in one week?

23. (The full score of this short question is 12)

The main factory and branch factory of Ai Xin Tent Group are located in cities A and B respectively. These two factories used to produce 9000 tents every week, but now an earthquake-stricken area is in urgent need of 14000 tents. The team decided to produce these tents within a week. So all the staff worked overtime, and within a week, the number of tents produced by the general factory and the branch factory reached 1.6 times and 65438+ respectively.

(1) How many thousands of tents are produced by the general factory and the branch factory in a week?

(2) Now, these tents will be transported by truck to two places in the earthquake-stricken area at one time. Because of the different road conditions in the two cities, the carrying capacity of trucks is also different. The number of vehicles required to transport tents per thousand people and the number of tents urgently needed in the two places are as follows:

land

land

Every 1000 tents

Number of vehicles required by a city 4 7

B city 3 5

Number of tents urgently needed (in thousands) 9 5

Please design a transportation plan to minimize the total number of vehicles needed, explain the reasons and find out the minimum number of vehicles.

23. Solution: (1) In the past, the general factory made thousands of tents every week, and the branch factories made thousands of tents every week.

From the meaning of the question, get 3 points.

The solution is this (thousands), (thousands).

A: Within a week of manufacturing tents, the main factory and the branch factory produced 8,000 tents and 6,000 tents respectively.

(2) If the general factory in (a) deploys thousands of tents to the disaster area, the general factory deploys thousands of tents to the disaster area, and the branch factories in (b) deploy thousands of tents to the disaster area respectively.

The total number of vehicles needed to transport tents in cities A and B is 0.8.

Judging from the meaning of the question, you understand.

That is. 10 point.

Because it decreases with the increase of.

So, when, there is a minimum value of 60.

Answer: When 8,000 tents were transported from the general factory to the disaster area, and 1000 tents and 5,000 tents were transported from the branch factory to the disaster area respectively, the minimum number of vehicles was 60. 12 minutes.

It is difficult to arrive early. Oh, this is really a very good question! I did it, too, hehe ~ @ _ @ ~

Wait a minute, I can't seem to copy it. I'll give you the web address and have a look for yourself. I'm sorry, I was so careless.