Question

Первая машинистка печатает 10 страниц в час, а вторая за 5 ч печатает столько же страниц, сколько первая за 4 ч. Сколько страниц отпечатают обе машинистки за 9 ч совместной работы?

Answer 1

Первая машинка напечатает за 4ч 40стр,обе машинки напечатают за 9ч 90 стр

Answer 2

Совсем не учишь?
Да уж до чего докатился мир, задачу где нужно ввести х кидают на знания

Answer 3

Problem Analysis

We are given that the first typist can type 10 pages in 1 hour, and the second typist can type the same number of pages in 5 hours. We are also told that the first typist can type the same number of pages in 4 hours as the second typist can type in 5 hours. We need to find out how many pages both typists can type together in 9 hours.

Solution

Let's break down the information given: - The first typist can type 10 pages in 1 hour. - The second typist can type the same number of pages as the first typist can type in 5 hours. So, the second typist can type 10 pages in 5 hours. - The first typist can type the same number of pages in 4 hours as the second typist can type in 5 hours. So, the first typist can type 10 pages in 4 hours.

To find out how many pages both typists can type together in 9 hours, we need to calculate the total number of pages each typist can type in 9 hours and then add them together.

Let's calculate the number of pages each typist can type in 9 hours: - The first typist can type 10 pages in 1 hour, so in 9 hours, the first typist can type 10 * 9 = 90 pages. - The second typist can type 10 pages in 5 hours, so in 9 hours, the second typist can type 10 * (9 / 5) = 18 pages.

Now, let's add the number of pages each typist can type in 9 hours: - The first typist can type 90 pages. - The second typist can type 18 pages. - Therefore, both typists can type 90 + 18 = 108 pages together in 9 hours.

So, both typists can type 108 pages together in 9 hours.

Answer

Both typists will be able to type 108 pages together in 9 hours.