】Each worker can process 16 parts a day or 21 parts B day Now the workshop is ready to complete an order for car parts. A car needs 5 parts and 3 B parts to form a set. In order to support production every day, how to arrange workers?

】Each worker can process 16 parts a day or 21 parts B day Now the workshop is ready to complete an order for car parts. A car needs 5 parts and 3 B parts to form a set. In order to support production every day, how to arrange workers?

If x workers are arranged to process part a, then the number of workers processing part B is (51-x)
16x：21（51-x）=5：3
48x=105（51-x）
48x=5355-105x
153x=5355
x=35
35 people should be arranged to process part a and 16 people should be arranged to process Part B
If the sum of a, B and C is 35, the difference between a and B is 7, and B is three times of C, then a, B and C are all equal
Let x, y, Z respectively
X + y + Z = 35, X-Y = 7, y = 3Z. By solving the equations, we get x = 19, y = 12, z = 4
19 12 4/11 18 6
When a factory transfers one tenth of the total number of people from workshop a to workshop B, the number of people in workshop a and workshop B is the same. How many percent of workshop a is workshop B?
If equal, it is 1 and the total is 2
A: 1 ÷ (1-1 / 10) = 10 / 9
B 2-10 / 9 = 8 / 9
It turns out that B is 8 / 9 △ 10 / 9 = 8 / 10 = 4 / 5 of A
The ratio of number a to number B is 3:5, and the ratio of number B to number C is 4:7
Formula, formula process and answers should be written!
The number of a is 12, the number of B is 12 * 5 △ 3 = 20
The ratio of B to C is 4:7, and C is 20 * 7 △ 4 = 35
The sum is 12 + 20 + 35 = 67
B is 12 △ 3 × 5 = 20
C is 20 △ 4 × 7 = 35
The sum of the three numbers of a, B and C is 12 + 20 + 35 = 67
The number B is x and the number C is y.
According to the meaning of the title:
12/X=3/5 ，X/Y=4/7
The solution is: x = 20, y = 35
The sum of three numbers is 12 + 20 + 35 = 67
A 12 is three, so one is four, B is four times five is twenty, C is thirty-five, and C is sixty-seven
The ratio of a to B = 3:5 = 12:20, the ratio of B to C = 4:7 = 20:35
So number A: number B: number C = 12:20:35
12/12=1
So number a + number B + number C = 12 * 1 + 20 * 1 + 35 * 1 = 67
The number of people in workshop a accounts for 58% of the total number of people in workshop a and workshop B. If 90 people are transferred from workshop a to workshop B, the ratio of people in workshop a and workshop B is 2:3?
The total number of people: 90 △ 32 + 3 - (1-58)], = 90 △ 35-38, = 90 △ 940, = 400 (people); the number of people in workshop a: 400 × 58 = 250 (people), the number of people in workshop B: 400-250 = 150 (people); answer: the number of people in workshop a was 250, the number of people in workshop B was 150
The ratio of the number a to the number B is 2 to 5, and the ratio of the number B to the number C is 4 to 7. The known number a is 16. What is the sum of the three numbers a, B and C?
B = 16 △ 2 × 5 = 40
C = 40 △ 4 × 7 = 70
The sum of a, B and C
=16+40+70
=126
Number B 16 △ 2x5 = 40
C number 40 △ 4x7 = 70
Three numbers and 16 + 40 + 70 = 126
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The number of people in workshop a accounts for 58% of the total number of people in workshop a and workshop B. If 90 people are transferred from workshop a to workshop B, the ratio of people in workshop a and workshop B is 2:3?
The total number of people: 90 △ 32 + 3 - (1-58)], = 90 △ 35-38, = 90 △ 940, = 400 (people); the number of people in workshop a: 400 × 58 = 250 (people), the number of people in workshop B: 400-250 = 150 (people); answer: the number of people in workshop a was 250, the number of people in workshop B was 150
A, B and C, the sum of the three numbers is 52, a is two-thirds of B, C is half of B, what is the number of a?
It's due on Thursday
There is another question: a rectangular water tank with a bottom surface. If you unfold its side, you will get a square with a side length of 40 cm. If the water tank contains half a tank of water, what is the area of the surface in contact with the water?
1. Let B be x, then a be 2x / 3 and C be x / 2
X + 2x / 3 + X / 2 = 52 leads to x = 24
A is 16
2. According to the meaning of the title, the perimeter of the square on the bottom is 40 cm
The height of the cuboid is 40 cm
The surface area of the cuboid is 2 (40 * 10 + 40 * 10 + 10 * 10) = 1800 square centimeters
If the water tank contains half a tank of water, then the area of the water contact surface is 900 square centimeters
The number of people in workshop a and workshop B accounts for 5 / 8 of the total number, and 90 people are transferred from workshop a to workshop B. then the number of people in workshop a and workshop B is 2 / 3. How many people are there in each workshop?
You can set up formulas or equations. The equations should have processes and the formulas should be clear
There are x people in total
So before the personnel transfer, there are (5 / 8) x people in workshop a and (3 / 8) x people in workshop B
After the transfer, there were (2 / 5) x people in workshop a and (3 / 5) x people in workshop B
Then the number of people transferred is (5 / 8) x - (2 / 5) x = (9 / 40) x = 90
So x = 400
One half of a is equal to one third of B, and three fourths of B is equal to four seventh of C. It is known that a is 93 less than C, then these three numbers are equal
What is the sum?
The key to this problem is to first introduce the multiple relationship between a and C
Let a be X
Then b * 1 / 3 = x / 2, so B = 1.5x
3 / 4 * b = 4 / 7 * C, so C = 3 / 4 * 1.5x * 7 / 4 = 63 / 32x
So 63 / 32x-x = 93, so x = 96
So the values of a, B and C are 96144189 and 429 respectively
Four hundred and twenty-nine