Question

За 6 дней. 6) Библиотеке надо переплести 18 000 книг. Одна мастерскаяможет выполнить эту работу за 3 дня, а другаяЗа сколько дней переплетут все книги обе мастерские, еслибудут работать одновременно?Помогите пожалуйста,это задача с производительностью,времени и с работой U -производительностьt-время А- работа​

Answer 1

Пошаговое объяснение:

вроде правильно если нет то извини

Answer 2

Ответ: за 2 дня

Решение:

18 000 кн (A) - 3 дн (T) -U?

18 000 кн (A) - 6 дн (T) -U?

1) 18 000 / 6 000 = 3 000 (кн) - 2 мастерская за 1 день (U)

2) 18 000 / 3 000 = 6 000 (кн) - 1 мастерская за 1 день (U)

3) 6 000 + 3 000 = 9 000 (кн) - мастерские вмете за 1 день

4) 18 000 / 9 000 = 2 (дня)

Answer 3

Problem Analysis

To solve this problem, we can use the formula for the productivity of combined work. The formula is given by:

U = A / t

Where: - U is the productivity - A is the amount of work - t is the time taken

We are given that one workshop can complete the work in 3 days, and the other workshop can also complete the same work in a different number of days. We need to find out how long it will take for both workshops to complete the work together.

Solution

Let's denote the productivity of the first workshop as U1 and the time taken by the first workshop as t1. Similarly, the productivity of the second workshop is U2 and the time taken by the second workshop is t2.

We can use the formula U = A / t to find the productivity of each workshop.

For the first workshop: U1 = A / t1

For the second workshop: U2 = A / t2

To find the combined productivity when both workshops work together, we can add their individual productivities: U_combined = U1 + U2

Now, we can use the combined productivity to find the time it will take for both workshops to complete the work together: U_combined = A / t_combined

We can rearrange the formula to solve for t_combined: t_combined = A / U_combined

Calculation

Given: - A = 18,000 books - t1 = 3 days - t2 = unknown - U1 = A / t1 - U2 = A / t2 - U_combined = U1 + U2 - t_combined = A / U_combined

Let's calculate the combined productivity and the time it will take for both workshops to complete the work together.

Result

Using the given information, we can calculate the combined productivity and the time it will take for both workshops to complete the work together.