Two warehouses A and B store 30 tons of grain. Take two fifths from warehouse A and put them into warehouse B. if the two warehouses have the same grain, how many tons of the original grain in warehouse B

Two warehouses A and B store 30 tons of grain. Take two fifths from warehouse A and put them into warehouse B. if the two warehouses have the same grain, how many tons of the original grain in warehouse B

A: 30 △ 1 + 1-2 / 5 × 2 = 25 tons
B: 30-25 = 5 tons
There are two grain warehouses, one is 14 tons less than the other. After two fifths of the grain in warehouse A and four fifths of the grain in warehouse B are transferred, the remaining grain in the two warehouses is equal?
Set up warehouse A to store x tons of grain. B: 49 tons
x-2/5x=x+14-4/7x
x=35
A 35 B 49
Let a X be B x + 14
3 / 5x = 3 / 7 (x + 14) multiply 35 on both sides
21x=15(x+14)
21x=15x+210
21x-15x=210
6x=210
x=35
A: there were 35 tons for a and 49 tons for B
There are 200 workers in the two factories. If 15 workers are transferred from factory a to factory B, the ratio of the two factories is 3:2. How many workers did factory B have?
After a transfers 15 people to B,
A: 3 / (3 + 2) × 200 = 120
original,
A: 120 + 15 = 135
B: 200-135 = 65
The sum of the three numbers of a, B and C is 210, a / B is 2 / 3, and B is 4 / 5. What are the three numbers of a, B and C?
A: B 2:3 = 8:12
B: C 4:5 = 12:15
A: B: C 8:12:15
A 210 ÷ (8 + 12 + 15) X8 = 48
B 48x3 / 2 = 72
C 72x5 / 4 = 90
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There are 200 workers in the two factories. If 15 people are transferred from factory a to factory B, the number of people in factory B is 2 / 3 of that in factory A. how many people are there in factory B? If so, give me the equation
200÷（1+2/3）×2/3-15
=120×2/3-15
=80-15
=65
There were 65 people in factory B
There are now a number of people
200 ÷ (1 + 2 / 3) = 120 people
B: 200 - (120 + 15) = 65
A: X
B: y
X+Y=200;
(X-15)/(Y+15)=2/3
Set up, factory B original x people
2/3(200-x-15)=x+15
x=65
A: Factory B used to have 65 people
200÷(1+2÷3）×2÷3-15
=100×2÷3-15
=80-15-65 (person)
A: there used to be 65 people in game B. It's improved. You can vote for it~
The ratio of number a to number B is 2 to 3, the ratio of number B to number C is 6 to 5, and the sum of number a, B and C is 45?
2:3=4:6
The ratio of a, B and C is 4:6:5
4 + 4 + 4
B 12x3 / 2 = 18
C 18x5 / 6 = 15
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The ratio of a to B is 2 to 3, and the ratio of B to C is 6 to 5
The ratio of a: B: C is 4:6:5
4+6+5=15
45/15=3
Number A: 4 * 3 = 12 number B: 6 * 3 = 18 number C: 5 * 3 = 15
There are 105 people in a factory, which are divided into two workshops. If 15 people are transferred from workshop a to workshop B, then workshop a is 50% of workshop B. how many are there in workshop a and workshop B?
How to solve the equation?
There were X and Y workers in workshop a and B
X+Y=105
（ X-15）/（Y+15）=1/2
The solution is: x = 50
Y=55
A: there were 50 and 55 people in the two workshops
The sum of number a, B and C is 620. The ratio of number a to number B is 3 to 5, and the ratio of number B to number C is 2 to 3
Number A: number b = 3:5 = 6:10
Number B: number C = 2:3 = 10:15
Number A: number B: number C = 6:10:15
What is the number a
620÷（6+10+15）×6=120
The second number is
620÷（6+10+15）×10=200
The third number is
620÷（6+10+15）×15=300
Number A: number b = 3:5 = 6:10
Number B: number C = 2:3 = 10:15
Number A: number B: number C = 6:10:15
What is the number a
620÷（6+10+15）×6=120
The second number is
620÷（6+10+15）×10=200
The third number is
620÷（6+10+15）×15=300
A: B: C = 6:10:15
1 portion: 620 (6 + 10 + 15) = 20
A: 20x6 = 120
B: 20X10 = 200
C: 20X15 = 300
A: B = 3:5 = 6:10
B: C = 2:3 = 10:15
Therefore, a: B: C = 6:10:15
6+10+15＝31
A: 620 × 6 / 31 = 120
B: 620 × 10 / 31 = 200
C: 620 × 15 / 31 = 300
The ratio of number a to number B is 3 to 5, the ratio of number B to number C is 2 to 3, and the ratio of number a to number B to number C is 6:10:15
The sum of a, B and C is 620.
Therefore, a = 620 △ (6 + 10 + 15) × 6 = 120
B = 620 ÷ (6 + 10 + 15) × 10 = 200
C = 620 △ (6 + 10 + 15) × 15 = 300
The ratio of the number of people in workshop a and workshop B is 7:4. Now after 15 people are transferred from workshop a to workshop B, the number of people in the two workshops is equal. How many people are there in workshop a and workshop B?
x/y=7/4
x-15=y+15
Let a x, B y
7x-15=4x+15
A 35 B 20
I'll answer: 35 20
If the ratio of number a to number B is 2:3 and the ratio of number B to number C is 4:5, what is the ratio of number a, B and C?
The ratio of a to B is 2:3 = 8:12
The ratio of B to C is 4:5 = 12:15
So the ratio of a, B and C is 8:12:15
8:12:15
The ratio of a to B is 2, that is, 8:12
The ratio of B to C is 4:5, that is 12:15
The ratio of a, B and C is 8:12:15
8：12：15
8;12;15
Number A: number b = 2:3 = 8:12 (all multiplied by 4)
Number B: number C = 4:5 = 12:15 (all multiplied by 3)
So: number A: number B: number C = 8:12:15