Question

В школьной столовой обедают 35 человек. при этом первое взяли 11 школьников,второе - 20,10 человек - только булочку и компот . сколько ребят съели полноценный обед из супа и второго? А)5 ;Б) 6;В) 15;Г) 20

Answer 1

Из 35 человек только булочку и компот взяли 10 человек. Значит или первое, или второе, или первое и второе взяли 35-10=25 человек.
Если мы сложим количество школьников, взявших первое, и количество школьников, которые взяли второе, то мы дважды посчитаем тех, кто взял первое и второе. 20+11=31.
31-25=6 - школьников, которые взяли полноценный обед из супа и второго

Ответ: Б) 6

Answer 2

Question Analysis

The question asks how many students ate a full meal consisting of soup and a second course in a school cafeteria. It provides the following information: - There are 35 students eating in the cafeteria. - 11 students took the first course. - 20 students took the second course. - 10 students only took a bun and juice.

We need to determine the number of students who ate a full meal consisting of soup and a second course.

Solution

To find the number of students who ate a full meal, we need to subtract the number of students who only took a bun and juice from the total number of students.

Let's calculate it step by step:

1. Total number of students: 35 2. Number of students who only took a bun and juice: 10 3. Number of students who ate a full meal: Total number of students - Number of students who only took a bun and juice

Let's calculate the number of students who ate a full meal:

35 - 10 = 25

Therefore, 25 students ate a full meal consisting of soup and a second course.

The correct answer is В) 15.