。Someone s coming. Do me a favor. Will answer a few questions. The plenum gave 100. As the title sug

1. Solution: Let Xiao Li ride a bicycle at a speed of x meters per minute, then Xiao Zhang's speed on a motorcycle is 4x meters per minute, according to the equation of the question column buried noise 8x + 8 * 4x + 4200 = 2 * 8 * 4x, the solution is x = 175, and the distance between the two of them is 2 * 8 * 4 * 175 = 11200 meters.

2. When meeting, staring ahead, the truck traveled 60 * 2 = 120 kilometers more than the bus, and the passenger car traveled 24 kilometers less than the truck per hour, then the two cars had traveled 120 24 = 5 hours when they met, and the solution was: the truck traveled x kilometers per hour, and the solution of 4x-60 = 5 (x-24) was x=60

3. (480-100) (100-80) = 19 minutes.

4. (10+6)*km, 8 (10-6)=2 hours.

5. The distance between the two places is x km, x 8-=x+2*24 12, x = 96 km.

A and B set out from a certain place at the same time to the same destination, A traveled 8 kilometers per hour, B traveled 12 kilometers per hour, and B was blind 2 hours earlier than A, how many kilometers are the distance between the two places?

A: 6 km.

Total number of questions:

bai100 5 = 500 (dao), du

The number of questions answered correctly is:

zhi81 + 91 + 85 + 79 + 74 = 410 (dao) dao, the number of errors is: 500-410 = 90 (dao), the maximum number of people who fail is: 90 3 = 30 (people answer), the number of people who pass is:

100-30=70 (people).

A: At least 70 people have passed

111＝37x3

Therefore, there were 36 students, divided into 3 groups of 12, and each teacher and student planted 3 trees.

111 3 = 37 trees planted in each group. (Only the number of trees planted in each group can be found.) It feels like a typographical error).

1st Prize: (10000-100x60) (300-100).

20 (pieces) second prize: 60-20 = 40 (pieces).

1. Solution:

A total of 15 days, and the master took 5 days off, then he actually did 10 days, missing two days of work, and the apprentice did 3 days. It takes x days for the master to complete, and the number of days it takes for the apprentice is:

Get: 1 (1 x+1.)

3x 5=12, x=20 days, so it takes 20 days for the master to complete it alone.

2. The total task volume is 50*30 1500

After 10 days, it will be 1500 24*10 1260, and if it is completed on time, it will take 1260 20 63

63 workers are needed every day.

3.If there were x tons of coal in pile A, then there were 760-x tons of coal in pile B (1-1 4) x + (1-1 5) (760-x) = 5923 4x + 608-4 5x = 592

4/5x-3/4x=608-592

1/20x=16

x=320760-x=440

There were originally 320 tons of coal in pile A, and 440 tons of coal in pile BSet up x male classmates in the last semester.

1+1 6)x+(1-1 5)(750-x)=710 solution: x=300

Therefore, for boys: 300 * (1 + 1 6) = 350 and for girls : 710-350 = 360.