Question

Компьютерный оператор набирая рукопись со скоростью 1 страница за 10 минут закончил работу за 3 часа за сколько часов он закончит работу если на каждую страницу потратит на 2 минуты меньше?

Answer 1

3 час = 180 минут
180/10=18 страниц в работе
1 страница =10-2=8 минут
18*8=144 минут =2 час 24 минуты

Answer 2

Problem Analysis

We are given that a computer operator types a manuscript at a rate of 1 page every 10 minutes and finishes the work in 3 hours. We need to determine how many hours it will take for the operator to finish the work if they spend 2 minutes less on each page.

Solution

Let's break down the problem step by step:

1. We know that the computer operator types 1 page every 10 minutes. This means they can type 6 pages per hour (60 minutes divided by 10 minutes per page).

2. We are given that the operator finishes the work in 3 hours. Therefore, they can type a total of 6 pages/hour x 3 hours = 18 pages.

3. Now, we need to determine how many hours it will take for the operator to finish the work if they spend 2 minutes less on each page. This means they will spend 10 minutes - 2 minutes = 8 minutes per page.

4. Using the new typing speed of 8 minutes per page, we can calculate the number of pages the operator can type in 1 hour: 60 minutes per hour / 8 minutes per page = 7.5 pages per hour.

5. Finally, we can calculate the total time it will take for the operator to finish the work using the new typing speed. Since the operator can type 7.5 pages per hour, it will take them 18 pages / 7.5 pages per hour = 2.4 hours.

Answer

If the computer operator spends 2 minutes less on each page, they will finish the work in approximately 2.4 hours.

Please let me know if anything is unclear or if you need further assistance!