6th Grade Percentage Application Questions Urgently, good people have good rewards

2.1st month: 220 (1+10%)=2003rd month: 220 (1+10%)=242

3.The second week repaired the full length: (

4.The apprentice processed this batch of parts: 1-65%=35%How many parts did the master and apprentice process:24 (65%-35%)=80

Question 1: Let the original chemical fertilizer x tons column formula is as follows.

162-142）=5%x x= 400

2.First month: 200

Third month: 242

These topics, this time to help you do it, you have to do it yourself in the future, 162-142=20, here 20 is the original 5%, so the original industry is 20

2. January*(1+10%)=220, so 220 in January and 220* in March

3. After the first week: 2400-2400*

Then after that, it is 1500-1500*11 20 = 6754, the master is 65% of the total, then the apprentice is 35% of the total, then the master-apprentice = 30% of the total then the total 30% = 24 pieces, then the total is 24

1.(162-142) 5%=400 (tons)2January: 220 (1+10%)=200 (ton) March: 220 (1-10%)=242 (ton).

3.2400-2400 meters).

4.24 [65%-(1-65%)] = 80 (pieces).

Question: Assuming that the annual interest rate of bank savings is that Zhang San deposited 8,000 yuan on January 1, 1990, and on January 1 of the following year, Zhang San withdraws the money and deposits all the principal and interest, Q: How much money can Zhang San withdraw from the bank by January 1, 1993?

Answer: 8000*(1+.)

Other: 1There are 80 bottles of Coke in the store, and the number of bottles of Coke is 1/5 less than that of Sprite, how many bottles are there in Sprite?

2 A train from Shanghai to Tianjin, has traveled 808 kilometers, there is still 1/3 left, how many kilometers is the railway from Shanghai to Tianjin?

3.There is a batch of potato chips in the mall, which sells 2/5 of the total in the morning and 4/8 of the total in the afternoonThere are 54 bags left that are not sold How many bags are there in this batch of potato chips?

5.Uncle Zhang's family has 15 peach trees, and the number of pear trees is two-thirds of that of peach trees and two-sevenths of apple trees.

6.There are 400 cows, 1/4 more than sheep, how many sheep are there?

Answer: 1There are 80 bottles of Coke in the store, and the number of bottles of Coke is 1/5 less than that of Sprite, how many bottles are there in Sprite?

Sprite has 80 (1-1 5) = 100 (bottle).

2 A train from Shanghai to Tianjin, has traveled 808 kilometers, there is still 1/3 left, how many kilometers is the railway from Shanghai to Tianjin?

The railway length from Shanghai to Tianjin.

808 (1-1 3) = 1212 (km).

3.There is a batch of potato chips in the mall, which sells 2/5 of the total in the morning and 4/8 of the total in the afternoonThere are 54 bags left that are not sold How many bags are there in this batch of potato chips?

This batch of potato chips has:

54 (1-2 5-4 8) = 540 (bag).

5.Uncle Zhang's family has 15 peach trees, and the number of pear trees is two-thirds of that of peach trees and two-sevenths of apple trees.

Pear trees have 15*2 3=10 (trees).

Apple trees have. 10 (2 7) = 35 (trees).

6.There are 400 cows, 1/4 more than sheep, how many sheep are there?

Sheep have 400 (1+1 4)=320 (head).

Solution: Set up two teams to repair x meters.

x+x=420

Team 3: 420-420 1 in 6 (won't play.) Write fraction form when you write. ) = 350 (meters).

A: The second team repaired 420 meters, and the third team repaired 350 meters.

Formula: 360 (

The second team is a double of the first team, then the second team repairs more than the first team, and the first team repairs 360 kilometers less than the second, so 1 times is:

360 km.

The first team repaired 240 kilometers, and the second team repaired kilometers.

1st team 11, second team 10, 3rd team 10 * (1-1 6) = 50 6

Second team 462 11*10=420 (m).

The third team 462 11 * 50 6 = 350 (m).

462 (1+10%) = 420 (m) for the second team.

420-420 1 6 = 350 (m) 3rd team.

A: The second team repaired 420 meters and the third team repaired 350 meters.

2nd team 462m (1+10%)=420m 3rd team 420 (1-1 6)=350m.

Team 2: 462 (1+10%)=420m.

Third team: 420 [1- (1 6)] = 350 meters.

Set up a total deposit of $ x.

x+ is the equation, solve it yourself.

720 20% = 3600 (top) (original plan).

3600 + 720 = 4320 (top) (number of tents produced).

6th grade. It's been two years since I graduated from elementary school, and the textbooks have been revised, and I don't know how far you've learned.

A field received an order, requiring the production of 7,200 tents to support the Sichuan disaster area, and later required the total production to increase by 20% compared with the original plan, and must complete the production task according to the original plan, the factory quickly sent additional personnel to organize production, the actual daily production of 720 more than the original plan per day, how many tents does the factory actually produce per day?

I flipped through the previous paper of the first year of junior high school, just this question, I think it's very simple, use equations to do it, you should be able to do it.

I think the most rare thing in elementary school is the problem of "cows eating grass", but now it's very simple to think about.

The more difficult part of the elementary school percentage is the concentration problem, but I can solve it now with physics.

1.Armor. B has two oil storage tanks, A has less oil storage than B, and 1 6 of 1 4B is input into A, and the oil storage capacity in A is 2 tons more than B. How many tons of oil is B. B?

2.The factory organized 400-450 people to participate in the tree planting activities, with an average of 32 trees planted per person. On average, 48 trees were planted by male employees and 13 trees were planted by female employees. Men who participated in the tree planting. How many women are there? (Calculate the number of people in proportion).

3.Armor. Second. Warehouse C 3 has 120 pieces of disaster relief materials, A has 120 pieces, and B is A. The sum of the two warehouses of C, C is A. Half of warehouse B, how many pieces of disaster relief materials are there?

4.Armor. Second. A total of 500 televisions were installed in Group C3. Armor. The ratio of the number of assembly units in the two groups of B is 5:3, and C is 39 units less than B. How many units are there? (Assuming that C is installed with 39 more units).

5.Armor. The distance between the two places is 243km, and a truck and a passenger car are traveling from A at the same time. The two places set out, walked in the opposite direction, and met after hours. The speed ratio of a truck to a bus is 4:5, so how many hours does it take for a bus to complete the journey? (both methods).

6.A daily chemical plant produces 9800 pieces of laundry soap, which is 5 more than 9How many boxes of laundry soap and soap are produced? (Variation rate clever solution).

The two places are 60 kilometers apart, car A and car B depart from place A to place B at the same time, car A arrives at place B 30 minutes earlier than car B, when car A arrives at place B, car B is still 10 kilometers away from place B, how many hours does car A take to complete the journey?

8.The fast train and the slow train are running from A and B at the same time, and it is known that the fast train travels 40 kilometers per hour, and after 3 hours, the express train has passed the midpoint of 25 kilometers, and the slow train has not yet met and is 7 kilometers apart, how many kilometers does the slow train travel per hour?

9. The product of three adjacent even numbers is a six-digit number, the first of these six-digit numbers is 8, and the end is 2, and the three even numbers are ( ).

10. A right-angled trapezoid, if the bottom increases the meter, the area will increase by square meters, if the bottom increases the meter, a square will be obtained, and the area of the right-angle trapezoid is ( ) square meters.

11. The ratio of the number A to the number B is 15:7, if the number of A increases by 12, the ratio is 9, and the number of A turns out to be ( ).

12. A project can be completed by a number of machines within the specified time, and if two machines are added, it can be completed as long as seven-eighths of the specified time; If the number of machines is reduced by two, then it will be completed two thirds of an hour later. How much time does it take for a machine to do this now?

13. A rectangular plank, 90 cm long and 40 cm wide, sawn it into 2 pieces and put it together into a square, can you do it? (mandatory).

14. The Shenzhou-5 manned spacecraft flew 14 times around the earth, and the last 10 circles flew along a circular orbit 343 kilometers from the earth.

15. Write a two-digit number arbitrarily, repeat it 3 times at a time into an 8-digit number, divide the 8-digit number by the two-digit number, and divide the resulting quotient by 9, ask: What is the remainder?

100 is too much, I looked for 15.

If it doesn't work, go for it.

There are several liters of brine, and when a certain amount of water is added, the brine concentration drops to 3%, and when the same amount of water is added, the brine concentration drops to 2%, and it can be inferred that the volume of water added is half the volume of the brine concentration reaching 3%. Adding the same amount of water is equivalent to adding a total of 3% of the same volume of saline, that is, it is diluted twice, so the concentration at this time.

The original price of a refrigerator was 3,800 yuan, but now it is only 3,600 yuan. How many percent is the current ** lower than the original?

Reduced: (3800-3600) 3800=2, the Nile, the largest river in the world, has a total length of about 6600 kilometers, and the second largest river, the Amazon, has a total length of about 6400 kilometers. How many percent is the length of the Amazon River shorter than the Nile?

Short: (6600-6400) 6600=

Hello, Hello!

Solution: 1, (3800-3600) 3800 100% = 200 3800 100% =

A: The current ** is 5.3 percent lower than before.

3%A: The length of the Amazon is about three percent shorter than that of the Nile.

Divide by whom, lower or shorter subtraction. After that, please do it yourself.