There are two oil pots, each containing one kilogram of oil. The oil in bottle a accounts for half of the bottle, and the oil in bottle B accounts for one third of the bottle

A and B have oil, 1 kg, then B pot big
Half of the first oil pot is 1kg, and the capacity of the first oil pot is 1 / 2 = 2kg
One third of the second lake is 1kg, and the capacity of the second oil pot is 1 / 3 = 3kg

There are two buckets of water. If half a kilogram of water is poured into bucket B from bucket a, the two buckets will have the same weight. How many kilogram is the difference between the two buckets

If the original water in bucket A is XKG and that in bucket B is ykG, then
x-0.5=y+0.5
X-Y = 1
That is, the difference between the original two barrels of water is 1 kg

There are two containers a and B. container a has one liter of water, and container B is empty. For the first time, pour half of the water in container a to container B; for the second time, pour one third of the water in container B to container a; for the third time, pour one fourth of the water in container a to container B How many liters of water is there in a container after 1991 times? How many liters of water is there in a container after 124 times?

After pouring once, there is 1 / 2 of water in container a and 1 / 2 of water in container B; after pouring twice, there is 2 / 3 of water in container a and 1 / 3 of water in container B; after pouring three times, there is 1 / 2 of water in container a and 1 / 2 of water in container B; after pouring four times, there is 3 / 5 of water in container a and 2 / 5 of water in container B

There was a full glass of water. Liang Liang drank half of it for the first time and the remaining half for the second time. How much water was there in the glass?

1-1/2-(1-1/2)×1/2 =1/2-1/4 =1/4

There are 500 grams of water in cup a and nothing in cup B. for the first time, half of the water in cup a is poured into cup B, and then one third of the water in cup B is poured back into cup A. for the third time, a quarter of the water in cup a is poured into cup B. so after 1999, how much water are there in each of the two cups?
Don't think it's a Brain Twister! It's a rigorous math problem!

Answer: as much as 250 grams each
Find the law, pour an odd number of times, two glasses of water are the same amount
For the first time, obviously, half each
The third time, cup a gets a third of cup B, and then empties a quarter
A cup surplus (1 + 1 / 3) * (1-1 / 4) = 1
Similarly: the fifth a cup: (1 + 1 / 5) * (1-1 / 6) = 1
……
So after the odd number of times, two glasses of water as much
(you can also think of it like this. The second time you pour water, that is, one third of B is equal to one fourth of A,
If you don't believe it, you can check it,
Two times: A: 250 + 250 * 1 / 3, B: 250 * 2 / 3;
Three times, a remains: (250 + 250 * 1 / 3) * 3 / 4 = 250, so B is also 250, because the total water is 500
Every time after that, the fourth time you pour water, one fifth of B's is equal to one sixth of a's, and so on.)

Party A and Party B have a total of 120 yuan. It is known that one third of Party A is equal to one half of Party B. how many yuan does Party A and Party B have

Let a have X Yuan, then B has 120-x yuan
1/3x=1/2(120-x)
1/3x=60-1/2x
1/3x+1/2x=60
5/6x=60
x=72
B has 120-x = 120-72 = 48 yuan

There are 120 balls, all of which are distributed to class A and class B. one third of class A's share is equal to one half of class B's share. How many balls does class a share

According to the meaning of the question, there are X students in class A and 120-x students in class B
(1 / 3) x = (1 / 2) (120-x) get x = 72
Classmate, when you encounter problems, you should think for yourself first, don't ask others blindly, what others give you will never be your own!

If a project is to be completed alone, Party A will complete half of it in three days and Party B will complete half in five days?

There is something wrong with the subject
One half divided by three and multiplied by five means the completion of a's work in five days
Five divided by one third should indicate how many days it will take Party B to complete the whole project
So the title should be "B finish one third in 5 days"

For a project, if Party A does it alone for 3 days and Party B does it alone for 5 days, half of the project can be completed; if Party A does it alone for 5 days and Party B does it alone for 3 days, one third of the project can be completed
How many days will it take to finish the work?

5 + 3 = 8 days
1 / 2 + 1 / 3 = 5 / 6
8 / (5 / 6) = 9.6 days (the cooperation between the two teams can be completed in 9.6 days)

For a project, if Party A works for three days and Party B works for seven days, half of it can be completed; if Party A works for seven days and Party B works for three days, one third of it can be completed
So how many days will it take for Party A and Party B to work together?

If Party A and Party B work together for 10 days, the completion (1 / 2 + 1 / 3) = 5 / 6, that is, Party A and Party B work together for 1 / 12 in one day, totally 12 days

There are two oil pots, each containing one kilogram of oil. The oil in bottle a accounts for half of the bottle, and the oil in bottle B accounts for one third of the bottle