Question

Библиотеке надо переплести 18 000 книг. Одна мастерская может выполнить эту работу за 3 дня, а другая за 6 дней.За сколько дней переплетут все книги обе мастерские, если будут работать одновременно? с краткой записью пожалуйста​

Answer 1

Ответ:

Пошаговое объяснение:

1) 18000 : 3 = 6000 (книг) - может переплести за 1 день 1 мастерская

2) 18000 : 6 = 3000 (книг) - может переплести за 1 день 2 мастерская

3) 6000 + 3000 = 9000 (книг) - могут переплести за 1 день две мастерские работая вместе

4) 18000 : 9000 = 2 (дня) - сделают всю работу две мастерские работая вместе

Ответ: за 2 дня

Answer 2

Ответ:

18 000:3=6 000 книг делает первая мастерская за 1 день.

18 000:6=3 000 книг делает другая мастерская за 1 день.

6 000+3 000=9 000 книг они делают вместе за 1 день.

18 000:9 000= за 2 дня они переплетут.

Пошаговое объяснение:

Answer 3

Problem Analysis

We have two workshops that can bind books at different rates. Workshop A can bind 18,000 books in 3 days, while Workshop B can bind the same number of books in 6 days. We need to determine how many days it will take for both workshops to bind all the books if they work simultaneously.

Solution

To find the number of days it will take for both workshops to bind all the books, we can calculate the combined rate at which they bind books.

Let's assume that Workshop A can bind books at a rate of x books per day, and Workshop B can bind books at a rate of y books per day.

Since Workshop A can bind 18,000 books in 3 days, we can set up the equation: 3x = 18,000.

Solving for x, we find that Workshop A can bind books at a rate of 6,000 books per day.

Similarly, since Workshop B can bind 18,000 books in 6 days, we can set up the equation: 6y = 18,000.

Solving for y, we find that Workshop B can bind books at a rate of 3,000 books per day.

Now, if both workshops work simultaneously, their combined rate will be x + y = 6,000 + 3,000 = 9,000 books per day.

To find the number of days it will take for both workshops to bind all 18,000 books, we can set up the equation: 9,000 * d = 18,000.

Solving for d, we find that it will take 2 days for both workshops to bind all the books if they work simultaneously.

Therefore, if both workshops work together, they will be able to bind all 18,000 books in 2 days.

Answer

If both workshops work simultaneously, they will be able to bind all 18,000 books in 2 days.