Urgent: 2 6th grade math application questions

Percentage of production the next day (1-40%) 30% = 30%.

Total 1500 30% = 5000.

1. If there are x parts, then 30%x+1500+2 5x=x x=5000, so there are 5000 parts.

2. Let the total length be x meters, then 40%x+1 3x+ x= so the total length is kilometers.

1.Solution: There are x parts in this batch.

x=5000

2.Solution: The total length of this road is X kilometers.

2/5x+1/3x+

4/15x=-2/5x=

In an isosceles triangle, the degree ratio of the base angle to the top angle is 1:3, what is the base angle of this triangle? What are the top angles in degrees?

Bottom angle = 180 5 1 = 36 degrees.

Top angle = 180-36-36 = 108 degrees.

Two cars at the same time from A and B in the opposite direction, 4 hours to meet, after the encounter car A continued to drive for 8 hours to reach B place, car B traveled 24 kilometers per hour, how many kilometers are the two places apart?

The speed of car A = 24 4 8 = 12 (km).

The distance between the two places = (24 + 12) 4 = 144 (km).

1: Because it is an isosceles triangle, the ratio of the three angles is 1:1:3, then the bottom angle is 1 5*180 degrees = 36 degrees The top angle is 180 degrees - 36 degrees * 2 = 108 degrees.

2: According to the conditions, it can be known that it takes eight hours for car B to walk for 4 hours, so the speed of car A is 24 kilometers * 4 8 = 12 kilometers per hour.

Then we can know that the distance between the two places is 12 km, hours*4+24km, hours*4=144km.

1.If the bottom angle is x, the top angle is 3x

x+x+3x=180

x=36 so the base angle is 36 degrees and the top angle is 108 degrees.

2.Let the total length be x kilometers and the speed of car A is y kilometers.

4(24+y)=x

4+8）y=x

The solution is x=144 y=12

So the distance between the two places is 144 kilometers.

Because it is isosceles, the ratio of the angle is 1:1:3 Base angle = 180 1 (1+1+3) = 180 5 = 36 degrees.

Let the velocity of A be x kilometers per hour, AB distance y kilometers, 4 (x+24)=y 4+8)x=y

12x=y is obtained by

Bring in 4x+96=12x

8x=96x=12

Bring in y=12 12

So the distance between the two places is 144 kilometers.

1.Base angle = 180 (1+1+3) = 36 degrees.

Top angle = 180-36-36 = 108 degrees.

Time of Encounter. Distance of A: Distance of B = 4:8=1:2

B: Full time = (4 + 8) 2 = 6 hours.

Distance = 6 24 = 144 km.

1. Bottom angle = 180 (1+1+3) = 36 degrees.

Top angle = 36x3 = 108 degrees.

2. If the place of encounter is C, then BC = 24 km x 4 = 96 km.

The speed of car A is 96 km/h 8=12 km/h.

So ac = 12 km x 4 = 48 km.

ab = ac + bc = 48 + 96 = 144 km.

(1+3+1)=36 36 times 3=108 Answer: The bottom angle of this triangle.

It is 108 degrees and the top angle is 36 degrees.

Multiplying by 4 and dividing by 8 equals 12 kilometers, 12 + 24) multiplied by 4 equals 144 kilometers.

A: The distance between the two places is 144 kilometers.

Column comprehensive formula: (24*4 8+24)*4=144 (km).

The sum of the inner angles of the triangle is 180 degrees. There are two bottom angles, which are 1 plus 1, plus the degree of the top angle 3, which is equal to 5Divide 180 by 5 to get 36, 36 times 1 gives 36, and 36 times 3 gives 108The base angle is 36 degrees and the top angle is 108 degrees.

basic error-prone problems;

The radius of a car's wheels is 3 decimeters, if the average rotation per minute is 150 cycles, how many minutes does it take for the car to pass the 4589-meter-long Nanjing Yangtze River Bridge? (Keep two decimal places for the number).

The hour hand of a small alarm clock is 41 millimeters long, and after a day and night, how many millimeters does the tip of the hour hand travel?

12 plus 40% of a number, and is 18What is this number?

Aunt Wang's flowers died in 2 pots, and the survival rate was 95%. How many pots of flowers did she feed?

Topics that require a lot of brainstorming:

There is a batch of fruit in the fruit market, and 80 tons were sold in 5 days, which is exactly 25% of this batch of fruit. How many days will it take for the remaining fruit to be sold out? (At least two ways to solve, converted to decimal does not count).

The master and apprentice work together to process a batch of parts, which is completed at 5 o'clock. At the time of completion, the apprentice processed 35% of the total. It is known that the master processes 12 more parts per hour than the apprentice. How many parts are in this batch?

Uncle Li purchased a five-year treasury roll with an annual interest rate of several yuan, and after five years, he received a total of principal and interest yuan. How much did Uncle Li buy treasury bills five years ago?

An audio franchise store sold two sets of different brands of audio, both priced at 3,600 yuan, one of which earned 20%, and the other lost 20%. Selling these two sets of stereos, in general, is it a profit or a loss?

1.Let the bottom angle be x and the top angle be y, then 2x+y=180, 3x=y, so x=36, y=108

2.Let A travel x kilometers per hour, and the total distance is s kilometers.

4（x+24）=s，（4+8）x=s，x＝12，s＝144

1) There are two baskets of fruits, the first basket of fruits weighs 32 kilograms, after taking out 20 from the second basket, the weight ratio of the two baskets of fruits is 4:3, how many kilograms of the original two baskets of fruits?

2) Plan to install 120 TVs, if you install 8 TVs a day, you can complete the task one day in advance, if you complete it 4 days in advance, how many should be assembled every day?

It takes 8 days for A to cultivate alone, so A's efficiency is 1 8 per day B is 1 12 First Question: 1-(1 8+1 12)*3=3 8 Second Question: The remaining tasks are:

1-(1 8+1 12)*4=1 6 Because the rest is repaired by A, 1 6 1 8 = 4 3 days.

(1)3*(1/8+1/12)=5/8

2) The joint practice was dry for 4 days.

1-5 6 = 1 6 left

1 6) (1 8) = 4 3 days.

It will take 4-3 days.

1-（1/8+1/12）×3=3/8

A: 3 8 left

1 6) (1 8) = 4 3 days.

A: It will take 4 to 3 days to complete.

Assuming that the blackboard is reported to be 12 copies and completed in 6 days, it means that the number of copies completed by 2 people per day is 2 copies; After Xiaobing did 2 days, Xiaohua did 1 day, and the two of them did a total of 3 days and completed 4/4 (that is, 1 4 * 12 = 3 copies), that is, 3 copies, it can be guessed that their efficiency is 1, so 12 copies of the blackboard newspaper, Xiao Bing or Xiao Hua did it alone (1 * 12 = 12 days).

Let the speed be v, and the total distance is s: 30v+20(v+50)+2000=s Continue to derive : 30v is equivalent to s 2 can be replaced by substitution, and then the formula is :

s 2 + 20v + 1000 + 2000 = s continue : 20v = s 2-1000-2000 finished: 20v = s 2-3000 replace 30v with :

20v=30v-3000 solution 10v=3000 v=300 Substituting the obtained velocity into the original equation can get 30*300+20*(300+50)+2000=s=18000

The result of 520*20 is how many TVs there are (10400), and then divide the total number of TVs by (520+130) The column formula can be written as: 10400 (520+130)=16 days.

1.After the creep did it for 2 days, Xiaohua did it for another day, which can be seen as working together for 1 day, and the creep sat on his own for another day So the efficiency of the creep: 1 4-1 6=1 12 The efficiency of the two-person cooperation:

1 6 So Xiaohua efficiency: 1 6-1 12=1 12 So it takes 12 days.

2, (20 50 2000) 30 20) 300 (m) 300 30 (300 50) 20 2000 18000 (m) 3520 20 = 10,400 units, 520 130 = 650 units, 10,400 650 = days.

1 will not 2 is...

3 is a total of 520 20 = 10400 units, the actual daily production of 520 + 130 = 650 units, it takes 10400 650 = days to complete the task.

3 520 20 = 10,400 units 520 130 = 650 units 10,400 650 = days.

2 20 50 2000 ] 30-20] = 300 m 300 30 [300 50] 20 2000 = 1800 m.

1 1/4 - 1/6 = 1/12 1/6 - 1/12 = 1/12 1 1/12 = 12 days.