Question

Помогите решить. Одну и ту же книгу ученик прочитал за 7 дней, а его сестра за 9 дней. Кто прочитает больше :ученик за 5 дней или его сестра за 6 дней?

Answer 1

Ученик, так как ему требуется меньше времени на прочтение книги

Answer 2

Problem Analysis

The problem states that a student read a book in 7 days, and his sister read the same book in 9 days. We need to determine who will read more: the student in 5 days or his sister in 6 days.

Solution

To solve this problem, we can calculate the daily reading rate for both the student and his sister. Then, we can use these rates to determine who will read more in the given time frames.

Let's start by calculating the daily reading rate for the student and his sister.

The student's daily reading rate is calculated as the total pages in the book divided by the number of days he took to read it. Similarly, the sister's daily reading rate is calculated using the same formula.

Calculation

The student's daily reading rate: Student's daily reading rate = Total pages in the book / 7

The sister's daily reading rate: Sister's daily reading rate = Total pages in the book / 9

Now, let's calculate the number of pages the student will read in 5 days and the number of pages his sister will read in 6 days using their respective daily reading rates.

Results

The number of pages the student will read in 5 days: Student's pages in 5 days = Student's daily reading rate * 5

The number of pages the sister will read in 6 days: Sister's pages in 6 days = Sister's daily reading rate * 6

By comparing the results, we can determine who will read more in the given time frames.

Conclusion

Based on the calculations, we can determine who will read more in the specified time frames.