Question

Оператор должен набрать на компьютере 118 страниц текста. В первые 3 он набирал по 26 страниц в час а затем стал набирать по 20 страниц в час за сколько времени оператор набрал вес текст?

Answer 1

Всего 118 стр.3*26=78 стр за 3 часа118-78=40 стр осталось40/20=2ч на 20 стр.3+2=5чотв:за 5 ч 

Answer 2

1) 26*3=78 страницы набрал за 3 часа                                                                2) 118-78=40 страниц осталось набрать                                                             3) 40:20=2 (за 2 часа набрал остав. страницы)                                                   4) 3+2=5 (часов работал всего)                                                                           Ответ: За 5 часов набрал все страницы

Answer 3

Problem Analysis

The operator typed 118 pages of text. In the first 3 hours, the operator typed at a rate of 26 pages per hour. After that, the operator's typing speed decreased to 20 pages per hour. We need to calculate the total time it took for the operator to type the entire text.

Solution

To solve this problem, we can calculate the time it took for the operator to type the first 3 hours and the time it took for the remaining pages at a slower typing speed. Then, we can add these two times together to get the total time.

Let's calculate the time it took for the operator to type the first 3 hours:

Time for the first 3 hours: - Typing speed: 26 pages per hour - Number of hours: 3 - Total pages typed in the first 3 hours: 26 pages/hour * 3 hours = 78 pages

Now, let's calculate the time it took for the remaining pages at a slower typing speed:

Time for the remaining pages: - Typing speed: 20 pages per hour - Number of remaining pages: 118 pages - 78 pages = 40 pages - Time to type the remaining pages: 40 pages / 20 pages per hour = 2 hours

Finally, let's calculate the total time:

Total time: - Time for the first 3 hours: 3 hours - Time for the remaining pages: 2 hours - Total time: 3 hours + 2 hours = 5 hours

Therefore, it took the operator 5 hours to type the entire text.

Answer

The operator took 5 hours to type the entire text.