Who laughs math problem: April 20, 2013 at 8:2 in Lushan County, Ya'an City, Sichuan Province... To tell you, I would like to thank 5B first

Who laughs math problem: April 20, 2013 at 8:2 in Lushan County, Ya'an City, Sichuan Province... To tell you, I would like to thank 5B first

Bats in Xiangji
Bright lights
After Twilight
Your thoughts have never been dim
Why? He looks down at the water
There is always a sudden leap forward,

Who laughs math problem: at 8:02 on April 20, 2013 in Lushan County, Ya'an City, Sichuan Province,

It seems that the most pressing thing is peace of mind
Is one of her keys still there
The indomitable "he"
This question is not for laughs
Why? In this most beautiful time
A summer breeze,

May I ask who knows the math problem: April 20, 2013 8:2 in Lushan County, Ya'an City, Sichuan Province... Familiar look, I thank 1z first

The joy of raising flowers
Planting in spring, harvesting in autumn and storing in winter
What have we done wrong? You have to punish me like this
When I first met you
Ah, what else can I give you

A tent factory plans to produce a batch of tents in April. After 20 days of production, there was an earthquake in Ya'an, Sichuan Province,
It is required that the total production of tents in April should be increased by 20% compared with the original plan. The factory quickly sent more personnel to organize production. In fact, it produced 200 more tents per day than the original plan. As a result, the task was completed two days ahead of the original plan. How many tents did the factory plan to produce in April?
Set the original planned total production x top
（1+20％）x=200（30-20-2）+x
x=8000
Set the original plan to produce X tops per day
20x+8（x+200）=30x（1+20％）
x=200
200×30=6000
Why are the results of the two methods different? Which one is correct and why?

The second method is right. I believe you can understand the second one. The first wrong x on the right side of the equation should be 28 / 30 * X. because the actual working days are 28 days, not 30 days, we actually produced 28 / 30 * x pieces according to the original plan, and then produced 200 more pieces every day. There are 8 days in total, 200 * 8 in total, 2

(2013, Meishan) on April 20, 2013, a 7.0 earthquake occurred in Ya'an. 550 tents were needed to provide temporary accommodation for the victims in a certain place. Now, factory a and factory B process and produce the tents. It is known that the daily processing capacity of factory a is 1.5 times that of factory B, How many tents can factory a and factory B process and produce each day? If factory a's daily processing cost is 30000 yuan and factory B's daily processing cost is 24000 yuan, how many days should factory a process and produce at least in order to make the total processing cost of these tents no more than 600000 yuan?

1. If the efficiency of factory B is x, then the efficiency of factory a is 1.5x. According to the meaning of the title: 240 / 1.5x + 4 = 240 / XX = 20, 1.5x = 1.5 × 20 = 30. That is: factory a produces 30 tents a day, factory B produces 20 tents a day. 2

Where was the earthquake today?

Earthquake time: 2011 / 11 / 05 07:43:39
Latitude: 26.2 degrees
Longitude: 99.5 degrees
Depth: 6 km
Magnitude: 3
Reference location: at the junction of Yunlong County and Jianchuan County, Dali Bai Autonomous Prefecture, Yunnan Province

Did there just be an earthquake?

Huidong earthquake with m s4.1 in Liangshan Yi Autonomous Prefecture, Sichuan Province
essential information
Time of earthquake occurrence: 19:42:53, November 14, 2012
Latitude: 26.5 degrees
Longitude: 102.6 degrees
Depth: 16 km
Magnitude: 4.1
Reference location: Huidong County, Liangshan Yi Autonomous Prefecture, Sichuan Province
Source: China Seismic Network

Where was the earthquake this morning

There are 2.1 earthquake records in Guizhou——
Occurrence time longitude latitude epicenter location magnitude
2014-04-08 03:05:36 104.2 26.87 Guizhou 2.1

Where was the earthquake this morning

Time of earthquake occurrence: April 6, 2014 23:07:52
Latitude: 50.1 degrees
Longitude: 87.8 degrees
Depth: 8 km
Magnitude: 5.2
Reference location: Russia

There was an earthquake at 4 o'clock this morning. Who knows

At about 3 o'clock on January 18, 2009, an earthquake occurred in some parts of Dengfeng
At 4:10 on January 18, 2009, a 3.2 magnitude earthquake occurred in Gongyi City, Zhengzhou City, Henan Province