A math problem is best solved using the 6th grade method

If x hours are processed on the first day, then (hours) are processed on the second day.

20x+30（

x=Because we find the number of hours processed on the first day, 20 per hour, so:

20 pcs) because the next day was processed for hours, 30 per day, so:

30 pieces) a total of processing quantity: 162 + 162 = 324 (pieces) This batch of parts has a total of 324 pieces.

The number of processing units per hour, 20 on the first day and 30 on the second day; The number of two days is the same, so time is inversely proportional to speed, which means that the first day takes time and the second day.

Number of parts: pcs.

Solve equations faster.

Solution: Set the first day + work x hours.

The equation can be listed as 20x=1/2*x=

Remember: I can't guarantee that you are right only if you think it is right.

Solution: There are x parts in this batch.

According to the title. x/2/20+x/2/(20+10)=

Solve x=324

It took x hours on the first day and an hour on the second day.

20x=（20+10）*(

Solution x = A......

Huaguoshan Fruit Store transported a total of 345 kilograms of apples, bananas and pears, the ratio of apples to bananas is 2:3, and the ratio of bananas to pears is 6:5.

Method 1: Ideas, the key to this question is to ask for the proportion of apples, bananas, and pears in Huaguoshan Fruit Store.

Because it is known that the ratio of apples to bananas is 2:3 and the ratio of bananas to pears is 6:5, and there are bananas in both ratios, the ratio of apples to bananas is 4:6, then the ratio of apples, bananas, and pears can be found. Namely:

Apple:banana:pear = 4:6:5, so.

4 Ten 6 Ten 5 = 15

Apple: 345x4 15 = 92 (kg).

Banana: 345x6 15 = 138 (kg).

Pear: 345x5 15 = 115 (kg).

Answer: Slightly. Method 2:

Idea: Find the proportion of apples, bananas, and pears in Huaguoshan Fruit Store, which is the same as method 1.

Apple:Banana:Pear = 4:6:5, that is, if the fruit in Huaguoshan Fruit Store is divided into 15 parts, apples account for 4 parts, bananas account for 6 parts, and pears account for 5 parts.

If the fruit shop is x for each serving, then the apple is 4x, the banana is 6x, and the pear is 5x

4x ten 6x ten 5x = 345

15x=345，x=23。

So apples: 23x3 = 92 (kg), bananas: 23x6 = 138 (kg), pears: 23x5 = 115 (kg).

Answer: Slightly.

Prime numbers, also called prime numbers, refer to those that have no other factors except 1 and themselves as factors, from which it can be seen that the prime numbers within 10 have 2, 3, 5, and 7, and the largest is obviously 7.

A number with 2 as a factor has 2, 4, 6, 8, and because the second number is a multiple of 6 at the same time, the second number can only be 6

Within 10, there are 0 and 1 that are neither prime nor composite

If it is both prime and even, it is obviously 2.

The smallest odd number is 1, the smallest composite number is 4, obviously the product of the two is 4, and the number divisible by 3 is 3,6,9, obviously their greatest common factor is 3 In summary, the password is: 761243 or 760243 Note: If there is a requirement for natural numbers in the question, then the password can only be 761243, because 0 belongs to the category of integers, but not to the category of natural numbers.

I don't know if you have learned the concept of integers, if you haven't learned, it is the default category of natural numbers, and the password can only be 761243

If you think the answer is okay, you are welcome.

There is a problem with this question, the first two are 761243

1.If the first basket of apples is x kg, then the second basket is 130-x kg.

x-x/6x=7/6(130-x+x/6)5x/6=910/6-35x/36

30x=910*6-35x

65x=5460

x = 84 B is 130-84 = 46 (kg).

2.Let what you have read be x pages.

What I haven't read is page 252-x.

5x/7=5x/7=5/2(252-x)

10x=35(252-x)

10x=8820-35x

45x=8820

x=1963.Let's make this book x pages.

Read 2x 15 on the first day

Read 6+2x 15 the next day

It has been read as 2x 15 + 6 + 2x 15

The rest is x-(2x 15+6+2x 15)2x 15+6+2x 15=3 7[x-(2x 15+6+2x 15)].

4x/15+6=3/7(x-4x/15-6)28x+105*6=45x-12x-18*155x=630+270

x=180, the rest is 180-6-4*180, 15=166 (page), 4If the elder sister has x animals, then the younger sister will have 100-x children.

x/4-(1/5)(100-x)=7

x/4-20+x/5=7

5x-400+4x=140

9x=540

x = 60 sister raised: 100-60 = 40 (only) 5The book has a total of x pages.

x/6+24+

x/6+24+(3/2))(x/6+24)+x/4=xx/6+24+x/4+36+x/4=x

2x+60*12+3x+3x=12x

4x=720

x=180

The number of A should be 93

Solution process: First calculate the common divisor of 1274 and 819, which can be found.

Because A and B are both two-digits, B can only be 13, while Xiao Hu can see that A is 98, and Xiao Tu can see that A is 63, so to sum up: A should be 93

Let B be b (two digits), so b is the common divisor of 1274 and 819 (the greatest common divisor of these two numbers is 91).

1) Let b = 91, then the number of small painted A is a single digit 9 (not in line with the topic) (2) Let b = 13, the number of Xiao Hu A is 98, and the number of small Tu A is 63 (both are two digits, in line with the title).

Keep Xiao Hu to get ten digits 9, and keep Xiao Tu to get single digits 3

So the number A is 93

The greatest common divisor of 1274 and 819 is 91

Then 1274 = 91*14

Because the question is two two-digit numbers, the common divisor should be 13, then 1274 = 13*98

The 10-digit number of A is 9 and the number A is 3, and A is 93

1274 Decomposition 2 7 7 13

819 decomposition 7 9 13

Because A and B are both two-digit.

So 819 should be broken down into 63 (7*9) and 13; Thus 1274 = 98 * 1363 98 each takes one correct answer 93

The greatest common factor of 1274 and 819 is 91

Two two-digit numbers are combined, so the common factor is 13

1274 = 13 * 98 819 = 13 * 63 because the ten digits of the number A are 9 and the number of digits is 3

So A is 93

ok```

Xiaohu misread the single digit of the first number, then the thousands and hundreds of the answer are correct; 12**Xiao Tu misread the ten digits of the number of A, then the ten digits and single digits of the answer are correct: **19 So A. The product of B's two two-digit numbers is 1219

Xiao Hu misread the single digit of the number of A, so his calculation result is the same as A. The difference between the products of B's two two-digit numbers must be an integer multiple of B: 1274-1219=53 53 is a prime number, so B is 53

Then A=1219 53=23