Why do 3 people use 3 buckets of water for 3 days and 9 people use 9 buckets of water for 9 days

Actually, the answer is 27 barrels, but the person who answered nine barrels may be deceived. Because they think that the next 9 people for 9 days are three times as many as the first 3 people for 3 days, the answer is that the first three buckets of water multiplied by three equals nine buckets of water. However, can nine people and nine days be divided into 3 three people and three days?

The answer is no, because it should be divided into 3 people for nine days, so the person who answered the nine days is wrong here!

To put it simply: 3 people 3 buckets of water for 3 days, then 3 buckets of water divided by 3 days and divided by 3 people equals 1 3 buckets, which is calculated as 1 3 buckets of water per person per day, so that 9 people for 9 days should be 1 3 * 9 * 9 27 buckets of water.

3 people should use 3 buckets of water for 3 days, and 9 people should use 27 buckets of water for 9 days.

3 people use 3 buckets of water for 3 days, which means that every 1 person can use 1 bucket of water for 3 days, then 1 person should use 3 buckets of water for 9 days, then 9 people use 27 buckets of water for 9 days.

3 people for 9 days, which is equal to 3 times as many as 3 people for 3 days, so use 9 buckets of water.

9 people for 9 days, equal to 9 times 3 people for 3 days, so use 27 buckets of water.

The statement is wrong. The analysis is as follows:

Step by step.

3 people with 3 buckets of water for 3 days, explain.

3 people with 1 bucket of water a day, explained.

1 person 1 day with 1 3 buckets of water, illustrated.

9 people with 3 buckets of water a day, explained.

9 people with 27 buckets of water for 9 days.

The answer is: 9 people drink 27 buckets of water in 9 days.

The dissolution is as follows: 3 people drink 3 buckets of water for 3 days, 9 people drink 3 times 3 equals 9 buckets of water, and 9 people drink 9 times 3 equals 27 buckets of water for 9 days.

It was concluded that 9 people drank 27 buckets of water for 9 days.

It's a classic brain teaser, and it's easy to answer 9 buckets. In fact, the key to this problem is time, look at this problem from another angle: 3 people 3 days can be converted into 3 people's time independently, that is to say, 3 days is the total time of 3 people (3 people experienced a total of 3 days), not the time when 3 people overlap (3 people experience 3 days at the same time).

The most common example is an elementary school teacher who is ridiculed by everyone, and the former elementary school teacher will criticize the students like this: "Do you know that you wasted 5 minutes of your time by deserting, and you wasted 250 minutes of your time with 50 students in the class!" "250 minutes is the concept of total time.

27 barrels.

Solution: Three people use three buckets of water for three days, and three people use one bucket of water for one day. Nine people use three buckets of water a day, and nine people use 27 buckets of water for nine days.

Three people use three buckets of water for three days, which can be understood as one person uses one bucket of water for three days, so nine people use 9 (9 3) = 27 buckets for nine days.

1. (Normalization method) first calculate how many buckets of water each person uses per day, and then multiply by 9 people for 9 days to get: (3 3 3) 9 9 = 27 (buckets).

2. (multiplier method) take 3 buckets of water as a multiple, and then multiply by the multiple of the number of people and the multiple of days to obtain: 3 (9 3) (9 3) = 27 (barrels).

The concept of multiples

An integer can be divisible by another integer, which is a multiple of another integer. For example, 15 is divisible by 3 or 5, so 15 is a multiple of 3 and a multiple of 5.

The quotient obtained by dividing one number by another. For example, a b=c, that is, a is a multiple of b. For example, if a b=c, it can be said that a is c times that of b.

There are infinite multiples of a number, which means that the set of multiples of a number is an infinite set. Note: You can't call a number a multiple alone, you can only say who's the multiple.

Answer: 9 people drink 27 buckets of water in 9 days.

Analysis: Because 3 people drink 3 buckets of water in 3 days, 9 people drink 9 buckets of water in 3 days, so 9 people can drink 27 buckets of water in 9 days.

Suppose one person uses a bucket of water a day, because three people use three buckets of water for 3 days, so one person uses 1 3 buckets of water a day.

So you can find it.

9x9=81

81x(1/3)=27

A: 9 people use 27 buckets of water for 9 days.

Math question: 3 people use 3 buckets of water for 3 days, and 9 people use how many buckets of water for 9 days?

27 buckets of water. One person uses one bucket of water for 3 days, so 9 people use 9*3=27 buckets of water for 9 days.

Math question: 3 people use 3 buckets of water for 3 days, and 9 people use how many buckets of water for 9 days?

27 buckets of water. 3 people 3 days 3 buckets of water.

1 bucket of water for 1 person for 3 days.

9 people, 3 days, 9 buckets of water.

9 people, 9 days, 27 buckets of water.

Because it is easy to mislead into 9 buckets of water, it is called a brain teaser.

In the 9 dazzling dance, there is an answer of 9 barrels. Because I know that other people's brains are not turning, I say that it is 9 buckets of water.

Hope it helps!

A: 9 people use 27 buckets of water for 9 days. Analysis:

Method 1:Because 3 people use 3 buckets of water for 3 days, 3 people use water for a day: 3 3 = 1 (bucket), so 1 person uses water for a day:

1 3 = 1 3 (barrel).

So, 9 people use water for 1 day: 1 3 9 = 3 (buckets), and 9 people use water for 9 days: 3 9 = 27 (buckets).

Method 2:Because 3 people use 3 buckets of water for 3 days, 9 people use water for 3 days: 3 3 = 9 (buckets) So 9 people use water for 9 days: 9 3 = 27 (buckets).

Math question: 3 people use 3 buckets of water for 3 days, and 9 people use how many buckets of water for 9 days?

This problem is actually very simple, and the stupid and common method is to first convert it to a few buckets of water a day for one person, and then multiply it by 81, 3 people have 3 buckets of water in three days, and those 3 people are 1 bucket of water a day, and one person is 1 3 buckets of water a day, so 1 3 * 81 = 27 buckets. Of course, you can also multiply it directly, because they are all the same multiples, 9 people 9 days is 3 people 3 days first folded into 3 people 9 days, and then folded into 9 people 9 days, which is 3 * 3 * 3 = 27 barrels. Hope to adopt.

I'm going to give you an analysis of this old problem.

3 people 3 buckets of water for 3 days Does it mean that 1 person is 1 bucket of water for 3 days? There's nothing wrong with it, so 9 people for 3 days is 9 buckets of water, right, there's nothing wrong with it.

9 people for 9 days is 9 people for 3 days 9 buckets of water x 3 three days = 27 buckets of water 9x3 = 27 buckets of water.

27 buckets of water, of course! It should be calculated like this:

Since 3 people use 3 buckets of water for 3 days, you get: 1 person uses 1 bucket of water for 3 days. 1 person uses one-third bucket of water for 1 day;

Then 9 people use 3 (9*1/3) buckets of water for 1 day.

9 people use 27 (9*3) buckets of water for 9 days.

So the answer should be 27 buckets of water.

3 people use 3 buckets of water for 3 days, and 9 people use how many buckets of water for 9 days?

3 people for 3 days for 3 buckets of water, 1 person for 3 days: 3 3 = 1 bucket of water, 1 person for 1 day: 1 3 = 1 3 buckets of water, then 9 people for 1 day: (1 3) 9 = 3 buckets of water for 9 people: 3 9 = 27 buckets of water.

Comprehensive formula: 3 3 3 = 27 (barrel).

If we look at 3 people as a whole, set 3 people = a

a 3 barrels a day divided by 3 days to get the number of barrels per day, a 1 barrel a day multiplied by 3 times.

3a 3 barrels in 1 day multiplied by 9 days.

3a 9 days 27 barrels 9 people 9 days 27 barrels.

Three people with three buckets of water for three days.

Solution: (1) Three people use three buckets of water for three days;

That is, one person has a bucket of water for three days.

Nine people for three days and nine buckets of water.

Nine people use 9 buckets of water for 9 days x 3 = 27 buckets of water.

2) Three buckets of water for three days;

Answer; Nine people used 27 buckets of water for nine days.

3 people use 3 buckets of water for 3 days, that is to say, 3 people use 1 bucket of water for 1 day, and 9 people use 3 buckets of water for 1 day, so 9 people use 9x3 = 27 buckets of water for 9 days.

According to the title, three people use one bucket of water a day, so nine people use three buckets of water a day, and 9 days is 27 buckets.

with 27 buckets of water.

Each person uses 1 3 buckets of water per day (3 3 3 = 1 3), 9 * 9 * 1 3 = 27

3 buckets of water for 3 people for 3 days.

9 people with 9 buckets of water for 3 days.

9 people with 27 buckets of water for 9 days.

3 people use 3 buckets of water for 3 days, then a person uses 1 bucket of water for 3 days, and a person uses one-third of a bucket of water a day.

So nine people use 3 buckets of water a day, and nine people use 27 buckets of water for 9 days.

One person has one bucket of water a day, and nine people have 81 buckets of water for nine days.

27 buckets of water, of course! How should it be calculated:

By 3 people 3 days with 3 buckets of water, get:

1 bucket of water for 1 person for 3 days;

1 person uses one-third bucket of water for 1 day;

Then 9 people use 3 (9*1/3) buckets of water for 1 day.

9 people use 27 (9*3) buckets of water for 9 days.

Then the answer should be 27 buckets of water.

Of course, it's 37 buckets, how should it be calculated: 3 people use 3 buckets of water for 3 days, get: 1 person uses 1 bucket of water for 3 days; 1 person uses one-third bucket of water for 1 day; So 9 people use 3 (9 * 3) buckets of water for 1 day, and 9 people use 27 (9 * 3) buckets of water for 9 days, then the answer should be 27 buckets of water.

27 buckets of water, 3 buckets of water for 3 people for 3 days, then 1 person for 3 days for 1 bucket of water; 1 person uses one-third bucket of water for 1 day; Then 9 people use 3 (9 3) buckets of water for 1 day 9 people use 27 (9*3) buckets of water for 9 days, so it should be 27 buckets of water.

Wrong. Because 3 people use 3 buckets of water for 3 days, 1 person uses 1 bucket for 3 days, so 9 people need to use 9 buckets for 3 days.

If it's 9 days, multiply it by 3 and you'll need 27 barrels.

If everyone uses x buckets of water per day, there is.

x*3*3=3

Solution: x=1 3

So the water used by 9 people for 9 days is:

9*9*9*1 3=27 (barrel).

Hope it helps.