Question

МАТЕМАТИКА В ЖИЗНИ Реши задачу. В книжном интернет-магазине было 3 000 экземпляров на- учной фантастики. На этой неделе в понедельник продали 530 книг, во вторник - 120. В среду - в 2 раза больше, чем во вторник. В четверг - на 100 книг меньше, чем в понедель- в ник. В пятницу - столько, сколько за период с понедельника по четверг. В выходные — ещё 100 книг. Остались ли ещё экземпляры научной фантастики в магазине и сколько? - с условие пжжжжюжпжпжпжжпжпжпжжпжпжп​

Answer 1

Ответ: 260

Пошаговое объяснение:

В понедельник было продано 530 книг, следовательно, осталось 3000 - 530 = 2470 книг.

Во вторник было продано 120 книг, следовательно, осталось 2470 - 120 = 2350 книг.

В среду было продано в два раза больше, чем во вторник, то есть 120 * 2 = 240 книг. Осталось 2350 - 240 = 2110 книг.

В четверг было продано на 100 книг меньше, чем в понедельник, то есть 530 - 100 = 430 книг. Осталось 2110 - 430 = 1680 книг.

В пятницу было продано столько, сколько за период с понедельника по четверг, то есть 530 + 120 + 240 + 430 = 1320 книг. Осталось 1680 - 1320 = 360 книг.

В выходные было продано ещё 100 книг, следовательно, осталось 360 - 100 = 260 книг.

Ответ: в магазине осталось 260 экземпляров научной фантастики.

Answer 2

Ответ: 260 книг.

Пошаговое объяснение:

ПН =530

ВТ=120

Ср=120*2=240

ЧТ=530-100=430

Пт=530+120+240+430=1320

выходные=100

Итог:2740(1320+430+240+100+120+530=2740)

А всего 3000 книг

3000-2740=260

Answer 3

Problem:

In a book online store, there were 3,000 copies of science fiction books. Throughout the week, the following sales occurred: - On Monday, 530 books were sold. - On Tuesday, 120 books were sold. - On Wednesday, the number of books sold was twice the number sold on Tuesday. - On Thursday, 100 books fewer were sold than on Monday. - On Friday, the number of books sold was equal to the total number of books sold from Monday to Thursday. - On the weekend, an additional 100 books were sold.

The question is: How many copies of science fiction books are still available in the store?

Solution:

To find the number of copies of science fiction books still available in the store, we need to subtract the total number of books sold throughout the week from the initial number of copies.

Let's calculate the total number of books sold from Monday to Friday: - Monday: 530 books - Tuesday: 120 books - Wednesday: twice the number sold on Tuesday, which is 2 * 120 = 240 books - Thursday: 100 books fewer than Monday, which is 530 - 100 = 430 books - Friday: equal to the total number of books sold from Monday to Thursday, which is 530 + 120 + 240 + 430 = 1,320 books

Now, let's calculate the total number of books sold throughout the week, including the weekend: - Total books sold from Monday to Friday: 1,320 books - Additional books sold on the weekend: 100 books - Total books sold throughout the week: 1,320 + 100 = 1,420 books

Finally, let's calculate the number of copies of science fiction books still available in the store: - Initial number of copies: 3,000 books - Total books sold throughout the week: 1,420 books - Number of copies still available: 3,000 - 1,420 = 1,580 books

Therefore, there are 1,580 copies of science fiction books still available in the store.

Answer:

There are 1,580 copies of science fiction books still available in the store.