For the more difficult equation problems in the fifth grade, if you are good, you can add a 40 rewar

1.From city A to city B, car A takes 6 hours, from city B to city A, car B takes 4 hours, now A and B start from city A and B at the same time, car A travels 96 kilometers when they meet, how far are the two cities A and B apart?

2. For a project, A and B cooperate to complete 1 6 of the project per hour, if A is asked to do it for 4 hours first, B will do it for another 3 hours. There are still 2 5 of the whole project left to be completed, how many hours will it take for A to complete the whole work alone?

3. On Xiaoqing's birthday, light two red and yellow candles of the same length, the red candle can be burned for 5 hours, and the yellow candle can be burned for 4 hours. At 8 o'clock in the evening, two candles are lit at the same time, and at a certain time both candles are extinguished at the same time, at this time the remaining part of the red candle is twice as much as the remaining part of the yellow candle, and what time is the night when the candle is extinguished?

4.The store buys a batch of volleyballs at a price of 6 yuan each, the retail price is 8 yuan, and when there are 10 left, the profit is 200 yuan after deducting the cost.

5. The pipeline team laid 2,620 meters of natural gas pipelines, with an average of 80 meters per day for the first four days, and the remaining requirements were 12 meters more than the original every day.

6.This year, the father's age is 9 times that of the son, and 9 years later, the father and son are 60 years old.

Answer: The ratio of the speed of car A and car B = 4:6 = 2:3

When the two cars meet, car A travels 96 kilometers, then car B travels 96 3 2 = 64 kilometers, and the whole journey is 64 + 96 = 160 kilometers.

For a project, A and B cooperate to complete 1 6 of the project per hour, if A is asked to do it for 4 hours first, B will do it for another 3 hours. There are still 2 5 of the entire works left unfinished. Then the workload of A and B for each 3 hours is 1 6 3 = 1 2, then the workload of A doing 4-3 = 1 hours is 1-1 2-2 5 = 1 10, and A needs 1 1 10 = 10 hours to complete all the work alone.

Think of the length of the candle as the unit "1", assuming that two candles have been lit for x hours, 1-1 5x = (1-1 4x) 2

x =10/3

10 3 hours = 3 hours 20 minutes.

It was 11:20 p.m. when the candle was extinguished.

Let's say x volleyballs are purchased, x-10) 8=6x+200

x=1402620-4 80) (80+12)=23 and 23 24 days.

After 9 years, the sum of the ages of the father and son is 60 years old, so the sum of the ages of the father and son this year = 60-9 2 = 42 years old.

Then this year's son's age = 42 (9+1)=??? Decimal fraction??? Maybe 6 times.

Son 42 (6+1) = 6 years old, father 6 6 = 36 years old.

22）x：1 ＝

28) x－ ＝

1.The students of the May 1st class went rowing, they rented some boats, if there were eight people in each boat, there would be one person left, and if there were 9 people in each boat, there would be five empty seats on the boat, how many students were in the May 1st class?

2.The two cars departed from the same place, one truck drove at 64 kilometers per hour and 25 minutes later, and a jeep chased after the truck at 82 kilometers per hour. Just ask: 2 minutes before the jeep catches up with the truck, how far apart are the two cars?

Students, it's good to have this kind of motivation, but the exam is not just about mathematics. Think twice before you act!

If Zhang Ming gave Wang Hai 15 yuan, the amount of money between the two would be equal. So Zhang Ming has 30 yuan more than Wang Hai.

30 (RMB.)

Zhang Ming 50 yuan, Wang Hai 20 yuan.

Equation: Let Zhang Ming and Wang Hai have x-yuan respectively.

x=20 Zhang Ming 50 yuan, Wang Hai 20 yuan.

1. Two ships, A and B, sailed from Shanghai to Qingdao along the same route at the same time. After 18 hours, Boat A fell 1 kilometer behind Ship B. How many kilometers does Boat A travel on average per hour, and how many kilometers does Boat B travel on average per hour?

2.Zhang Cun and Li Cun built a road, and they started construction at the same time from one end of the village, which was completed in 16 days. When it was completed, Zhangcun was 80 meters more than Licun. Zhang Village repairs an average of 75 meters per day, and Li Village repairs an average of how many meters per day?

3 Cars A and B drove out of both places at the same time and met 45 minutes later at a distance of 9 kilometers from the midpoint. It is known that the speed of car A is twice that of car B, how many kilometers did each car travel when they met?

1)3x-(1/2+1/4)=7/12

3x=7/12+3/4

3x=4/3

x=4/92)x=

3)x=3/4=4/3

2(x+x+

25000+x=6x

3200=450+5x+x

12x-8x=

x+52－x

1591÷x＝x+

15x＝33x－8＝16

7(x-2)=2x+3

3x+9=2718(x-2)=270

12x=300-4x

7x+3x÷5=

30÷x+25=85

410-3x=170

3(x+6x-3x=18

5×3-x÷2=8

x÷9x-40=5

x÷5+9=21

48-27+5x=31

x+2x+18=78

200-x)÷5=30

x-140)÷70=4

4(7((x+

5x+5(x+8)=102

x+3x+10=70

3(x+3)=50-x+3

5x+15=60

x÷20-9x=

6x+150×2+3x=690

2x-20=4

3x+6=18

2((x-3)÷2=

3x=x+100

x+6x+18=48

3(x+12x-9x=

13(x+5)=169

2x-97=

42x+25x=134

2(x-3)=

65x+7=42

7x=

3x+5x=48 14x-8x=12 6*5+2x=44

20x-50=50 28+6x=88 32-22x=10

24-3x=3 10x*（5+1）=60 8x=71+1

56x-50x=30 5x=15*5*（5-2） 78-5x=28

I wish you happiness and progress in your studies.

It is recommended to buy a collection of application problems.

A is larger than b2, and a = b+2

b is 11 larger than c, b = c + 11, then a = c + 13 knows that the average of these 3 numbers is 70: a + b + c = 70 * 3c + 13 + c + 11 + c = 210

c=62

3x+5x=48 14x-8x=12 6*5+2x=4420x-50=50 28+6x=88 32-22x=1024-3x=3 10x*（5+1）=60 99x=100-xx+3=18 x-6=12 56-2x=204y+2=6 x+32=76 3x+6=1816+8x=40 2x-8=8 4x-3*9=298x-3x=105 x-6*5=42 x+5=72x+3=10 12x-9x=9 6x+18=4856x-50x=30 5x=15 78-5x=2832y-29=3 5x+5=15 89x-9=80100-20x=20 55x-25x=60 76y-75=123y-23=23 4x-20=0 80y+20=10053x-90=16 2x+9x=11 12y-12=2480+5x=100 7x-8=6 65x+35=10019y+y=40 25-5x=15 79y+y=8042x+28x=14

Aiyun Pei Bo suddenly happened to be very purlin, shaking the water, weeping steadily, protecting the mourning drawer, cutting fat arms.