Question

Ученики выстроились в один ряд. Настя стоит 11-ой сначала, а Рома 13-ым с конца ряда. Если учитывать что между ними есть три человека, то сколько всего учеников в классе?

Answer 1

Ответ:

Задача имеет 2 решения

Пошаговое объяснение:

1 вариант

Настя стоит 11 сначала, значит перед ней ещё 10 человек.

Рома стоит 13 с конца, значит за ним ещё 12 человек

Между ними ещё 3 человека. Посчитаем:

10 + 1 + 3 + 1 + 12 = 27 человек в классе

2 вариант (смотри рисунок)

11 + 13 = 24

13 - 11 = 2

Ещё между ними 3 человека

24 - 2 - 3 = 19 - человек в классе

Answer 2

Problem Analysis

We are given that the students are arranged in a single row. Nastya is standing 11th from the beginning of the row, and Roma is standing 13th from the end of the row. There are three students between Nastya and Roma. We need to determine the total number of students in the class.

Solution

Let's break down the problem step by step:

1. Nastya is standing 11th from the beginning of the row. 2. Roma is standing 13th from the end of the row. 3. There are three students between Nastya and Roma.

To find the total number of students in the class, we need to calculate the number of students before Nastya, the number of students after Roma, and the number of students between Nastya and Roma.

Let's calculate these values:

1. Number of students before Nastya: 11 - 1 = 10 2. Number of students after Roma: 13 - 1 = 12 3. Number of students between Nastya and Roma: 3

To find the total number of students in the class, we add these values together:

Total number of students = Number of students before Nastya + Number of students after Roma + Number of students between Nastya and Roma

Total number of students = 10 + 12 + 3 = 25

Therefore, there are 25 students in the class.

Answer

There are 25 students in the class.