One night in 30 yuan.

Three people each paid 10 to make up 30 yuan and gave it to the boss.

Later, the boss said that it was enough to give 25 yuan a discount today.

Take out 5 yuan and ask the waiter to return it to them.

The waiter secretly hid 2 yuan,

Then,

Divide the remaining 3 yuan money among three people,

Everyone gets 1 yuan.

In this way,

Everyone handed in 10 yuan.

Now it's back to 1 yuan,

That is 10- 1=9,

Everyone only spent 9 yuan's money,

Three people each, 9 yuan,

3×9 = 27 yuan+2 yuan hidden by the waiter =29 yuan,

Where's the other dollar?

2. A man goes to buy onions.

How much is a catty of onions?

The onion seller said 1 yuan 1 kg, which means 100 kg, and it costs 100 yuan.

The onion buyer asked if the onion was sold separately from the onion.

The onion seller said that what he sold was 7 hairs and 3 hairs and green.

All the onion buyers bought it.

Weigh 50 kg of green onions and 50 kg of green onions.

The final calculation is that 50*7 equals 35 yuan.

50*3 equals 15 yuan.

35+ 15 equals 50 yuan.

The onion buyer gave it to the onion seller, leaving 50 yuan.

But the onion seller is confused.

Why do onions cost 100 yuan?

And why do you buy onions for 50 yuan?

Why do you think this is?

3. A peach with ten cents.

Three peaches for one peach.

1 yuan How many peaches can you eat?

4. The clothes that Party A spent 19 yuan bought were priced at 2 1,

B gave A a hundred dollars, but A didn't have any change, so he went to C to change money and came back to give B money.

After B left, C found that 100 yuan was fake money, so he went to A,

A gave C another hundred,

How much did A lose?

There is a well about 7 meters deep.

A snail climbed up from the bottom of the well.

Climb 3 meters during the day and drop 2 meters at night.

How many days does it take for a snail to climb out of the well?

6. Several identical boxes are arranged in a row. Xiao Ming put more than 40 identical pieces in these boxes, but there were no pieces in one box, and then he went out. Soon, Xiaoguang walked into the house. Xiaoguang takes one from each box containing chess pieces and puts it in an empty box. Then he rearranged the boxes. Xiao Ming came back and took a closer look. He didn't find anyone moving the pieces in these boxes, but moved them away. Q: * * * How many boxes are there?