Question

В классе 7 детей посещают спортзал ежедневно 9-посещают через день а остальные вообще не посещают Вчера в спортзале было 13 детей. Сколько детей будет сегодня

Answer 1

Будет 15 человек
Решение :
1) 9-7=2(чел)на 2 человека больше посещяют через день
2) 13+2=15( чел)было сегодня

Answer 2

Question Analysis

The question is asking how many children will be in the gym today, given that there are 7 children in the class who visit the gym daily, 9 children visit every other day, and the rest do not visit at all. Yesterday, there were 13 children in the gym.

Answer

To determine how many children will be in the gym today, we need to consider the number of children who visit the gym daily and every other day.

Let's break down the information given:

- There are 7 children who visit the gym daily. - There are 9 children who visit the gym every other day. - Yesterday, there were 13 children in the gym.

To calculate the number of children in the gym today, we need to determine how many children from the group that visits every other day will be present today.

Since the children who visit every other day alternate their visits, we can assume that half of them will be present today. Therefore, we can calculate the number of children in the gym today as follows:

Number of children in the gym today = Number of children who visit daily + (Number of children who visit every other day / 2)

Let's calculate it:

Number of children in the gym today = 7 + (9 / 2) = 7 + 4.5 = 11.5

Since we cannot have half a child, we can round the number to the nearest whole number. Therefore, there will be approximately 12 children in the gym today.

Please note that this calculation assumes that all children who visit the gym every other day will be present today. It's possible that some of them may not attend, which could affect the actual number of children in the gym.