Question

Нина набирает на компьютере одну страницу за 20 минут, лена за 20 минут. сколько страниц наберёт каждая девочка за 1 час ? за 2часа? за какое время нина наберёт 6 страниц, а лена-4?

Answer 1

1ч-60 мин

1)60:20=3мин

2)120:20=6мин

3)6*20=120мин

4)4*20=80мин

Answer 2

1ч-60 мин

1.60:20=3

2.120:20=6

3.6*20=120

4.4*20=80

Answer 3

Calculation of Pages Typed by Nina and Lena

To calculate the number of pages each girl can type in 1 hour and 2 hours, we need to determine how many pages they can type in 20 minutes and then multiply that by the number of intervals in 1 hour and 2 hours.

According to the information provided, Nina can type 1 page in 20 minutes, and Lena can also type 1 page in 20 minutes

To calculate the number of pages each girl can type in 1 hour, we need to multiply the number of pages typed in 20 minutes by 3 (since there are 3 intervals of 20 minutes in 1 hour).

Therefore, Nina can type 3 pages in 1 hour, and Lena can also type 3 pages in 1 hour.

To calculate the number of pages each girl can type in 2 hours, we need to multiply the number of pages typed in 20 minutes by 6 (since there are 6 intervals of 20 minutes in 2 hours).

Therefore, Nina can type 6 pages in 2 hours, and Lena can also type 6 pages in 2 hours.

Time Taken to Type 6 Pages by Nina and 4 Pages by Lena

To determine how long it will take Nina to type 6 pages and Lena to type 4 pages, we need to divide the number of pages by the number of pages typed in 20 minutes.

According to the information provided, Nina can type 1 page in 20 minutes Therefore, to type 6 pages, it will take her 6 times the time it takes to type 1 page, which is 6 times 20 minutes.

Hence, it will take Nina 120 minutes (or 2 hours) to type 6 pages.

Similarly, since Lena can also type 1 page in 20 minutes it will take her 4 times the time it takes to type 1 page, which is 4 times 20 minutes, to type 4 pages.

Therefore, it will take Lena 80 minutes (or 1 hour and 20 minutes) to type 4 pages.

Please note that these calculations assume a consistent typing speed and do not account for breaks or interruptions.

I hope this helps! Let me know if you have any further questions.