Question

В книге 120 страниц в 1день мальчик прочитал 3/8 книги,во 2 день 80% того что он прочитал в 1 день,а в 3 день он прочитал все оставшиеся страницы

Answer 1

120:8*3=45 стр  прочитал в 1 день
45:100*80= 36 стр  прочитал во 2 день
120-(45+36)=39 стр прочитал в 3 день

Answer 2

Problem Statement

A boy read 3/8 of a 120-page book on the first day, 80% of what he read on the first day on the second day, and the remaining pages on the third day. We need to determine how many pages the boy read on each day.

Solution

To solve this problem, we can break it down into three steps:

1. Calculate the number of pages the boy read on the first day. 2. Calculate the number of pages the boy read on the second day. 3. Calculate the number of pages the boy read on the third day.

Let's calculate each step:

Step 1: Number of Pages Read on the First Day

The boy read 3/8 of the book on the first day. To calculate the number of pages, we multiply the fraction by the total number of pages in the book.

Number of pages read on the first day = (3/8) * 120

Using the given information, we can calculate the number of pages read on the first day.

Number of pages read on the first day = (3/8) * 120 = 45.

Step 2: Number of Pages Read on the Second Day

The boy read 80% of what he read on the first day on the second day. To calculate the number of pages, we multiply the percentage by the number of pages read on the first day.

Number of pages read on the second day = 80% * (number of pages read on the first day)

Using the calculated number of pages read on the first day, we can calculate the number of pages read on the second day.

Number of pages read on the second day = 80% * 45 = 0.8 * 45 = 36.

Step 3: Number of Pages Read on the Third Day

The boy read the remaining pages on the third day. To calculate the number of pages, we subtract the sum of the pages read on the first and second days from the total number of pages in the book.

Number of pages read on the third day = Total number of pages - (number of pages read on the first day + number of pages read on the second day)

Using the calculated numbers, we can calculate the number of pages read on the third day.

Number of pages read on the third day = 120 - (45 + 36) = 120 - 81 = 39.

Summary

Based on the given information, the boy read the following number of pages each day: - First day: 45 pages - Second day: 36 pages - Third day: 39 pages

Please note that the calculations are based on the given information and assumptions made. If there are any additional details or constraints, the results may vary.

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