How many grams can not be sent by a letter, how many kilograms can be contained in an envelope when

It takes 80 minutes to send a letter to the city, and 120 points to go out of the city.

OK. Just stick one more and you're good to go.

Domestic Ordinary Mail Tariff:

Letter Within the first 100 grams, each weighing 20 grams (less than 20 grams will be calculated as 20 grams) Yuan continues to weigh 101-2000 grams per 100 grams (less than 100 grams will be calculated as 100 grams) Yuan See reference materials for details!

How many kilograms can be in an envelope when a letter is sent by a post office?

According to the current regulations of the post office, letters cannot exceed 20 grams, and ordinary letters exceeding 20 grams are counted as two letters if they exceed 1-20 grams. By analogy, whether it is sent to the port or to other ports, it is necessary to carry the postage of the rubber early postage. If you can't accurately estimate the weight of your letters, more postage will cause waste, and insufficient postage will be returned by the post office and delay time.

The question is not fully described, and this type of question is one type of problem and parking lot fee and taxi fare. Divide the fee you need to charge into 2 parts. Part of it is the starting price, and some part is the excess part of the **.

Sending questions can be divided into 20 grams or less and more than 20 grams. Since the title does not specify the quality of the letter, let's use 80 grams as an example.

80-20 = 60 (grams).

First, calculate how much the overweight part is, and the 20 grams lost will cost yuan.

Look at the remaining 60 grams and there are several qualities that need to be paid separately.

60 20 = 3 (pcs).

I think the data in the last 20 grams of the question is also wrong, and it should not be the same as the first weight, or ** should be improved.

There are 3 20 grams, there are 3 yuan, plus the first yuan is the postage of the letter.

The first weight of the letter is less than 100 grams, and if it exceeds this weight, Bisun Pei needs to add postage. Waibu Pingxin Kaitong: Yuan. (The first weight of the letter is less than 100 grams, and the additional weight of more than 100 grams remains unchanged for each weight of 100 grams).

.Postage yuan within 20 grams of ordinary letter in this city, additional postage yuan for each additional 20 grams, and less than 20 grams of overweight will be calculated as 20 grams.

2.The city's ** letter within 20 grams of postage yuan, each additional 20 grams of postage yuan, overweight less than 20 grams according to 20 grams of calculation.

3.The postage of the letter within 20 grams shall be charged for each additional 20 grams, and the excess weight of less than 20 grams shall be calculated as 20 grams.

4.The postage of the letter within 20 grams of foreign port number letter shall be charged for each additional 20 grams, and the excess weight of less than 20 grams shall be calculated as 20 grams.

5.There are many requirements and tariffs for printed matter and international mail, and the weight and tariff are mainly calculated by the postage machine.

You can send multiple letters, and you can add more postage, but the ring cannot be mailed in an envelope, and if the envelope is broken, it will not be safe, so it is best to use express delivery.

Answering the current regulations of the post office, letters cannot exceed 20 grams, ordinary letters exceeding 20 grams, and more than 1-20 grams are counted as two letters. By analogy, whether it is sent to the local port or to other ports, postage is required. If you can't accurately estimate the weight of your letter, over-postage will cause waste, and insufficient postage will be returned by the post office and delayed.

An ordinary envelope weighs 4 grams, a piece of manuscript paper or a grid letter paper weighs grams, a large folio weighs 12 grams, and a small tabloid weighs 6 grams. The 5-inch color photo weighs about 3 grams.

On November 15, 2006, the first weight of the domestic ordinary letter within 100 grams, the tariff from 20 grams per weight of the local dollar, foreign port yuan to the local dollar, foreign port yuan, more than 100 grams of the weight of the tariff standard unchanged.

At present, the tariff for sending letters from the post office is yuan, the tariff for foreign ordinary mail is yuan, the tariff for foreign letters is yuan, and the minimum for express mail is 22 yuan, all of the above are in the case of not being overweight, the weight of ordinary mail is 20 grams, and more than 20 grams are overweight and additional fees are charged.

Analysis: The range of the conditions sought can be deduced from the meaning of the topic, and then the buried solution of the cavity can be found according to the conditions that have been known

Answer: Solution: When the weight of the letter does not exceed 20g, pay postage when it is less than 20g, pay postage when it exceeds 20g and does not exceed 40g, and so on, every additional 20g needs to increase the postage yuan, when it exceeds 40g but does not exceed 60g, when it exceeds 60g and does not exceed 80g, it pays postage yuan, 60, he should pay postage yuan

Comments: This question examines the method of algebraic evaluation, while also implying the overall mathematical idea and the ability to do the right operation

Postage is paid when the weight of the letter does not exceed 20g, postage is paid when it exceeds 20g but does not exceed 40g, and so on, postage is increased for every additional 20g, postage is paid when it exceeds 40g but not more than 60g, postage is paid when it exceeds 60g but does not exceed 80g, 60, he pays postage yuan