Question

В книге 180 страниц. Ученик прочитал в субботу 25% всей книги, а в воскресенье ещё 5/9 оставшейся страниц. колко страниц осталось прочитать в понедельник, чтобы закончить всю книгу.

Answer 1

180:4=45

180-45=135

135:9х5=75

135-75=60 осталось

Answer 2

Всего - 180 стр. 100%
В субботу -?стр., но 25% от 100%
Воскресенье-?стр. 5/9 от оставшегося.
Понедельник-? стр, от оставшегося
100-25=65%
65:5/9=117 стр.
180-117=63стр
Ответ: 63 страниц

Answer 3

Problem Analysis

The problem states that a student has read 25% of a 180-page book on Saturday and an additional 5/9 of the remaining pages on Sunday. We need to determine how many pages are left to read on Monday in order to finish the entire book.

Calculation

Let's calculate the number of pages the student has read on Saturday and Sunday.

On Saturday, the student read 25% of the entire book: 25% of 180 pages = (25/100) * 180 = 45 pages

Now, let's calculate the number of pages the student read on Sunday.

The student read 5/9 of the remaining pages. To find the remaining pages, we subtract the pages read on Saturday from the total number of pages: Total pages - Pages read on Saturday = Remaining pages 180 pages - 45 pages = 135 pages

Now, let's calculate the pages read on Sunday: 5/9 of 135 pages = (5/9) * 135 = 75 pages

To find the number of pages left to read on Monday, we subtract the pages read on Saturday and Sunday from the total number of pages: Total pages - Pages read on Saturday - Pages read on Sunday = Pages left to read on Monday 180 pages - 45 pages - 75 pages = 60 pages

Answer

The student has 60 pages left to read on Monday in order to finish the entire book.