Question

На соревнования по плаванию приглашены Родственники друзья и знакомые четвероклассников. в бассейне 380 зрительских мест. поболеть за учеников 4 класса пришли 158 родственников. это на 12 Человек меньше, чем друзей. Хватит ли места для знакомых если их 40 человек

Answer 1

158+12 = 170 человек – друзей.
380-158-170 = 52 человека.
Ответ: для знакомых хватит мест.

Answer 2

Problem Analysis

We have been given the following information: - There are 380 spectator seats in the swimming pool. - 158 relatives came to support the 4th-grade students, which is 12 people less than the number of friends. - There are 40 acquaintances who also want to attend the competition.

We need to determine if there will be enough space for the acquaintances.

Solution

To solve this problem, we need to calculate the total number of friends and relatives who came to support the 4th-grade students.

Let's assume the number of friends is F and the number of relatives is R.

According to the given information, we have the following equations: 1. R = 158 2. R + 12 = F

We can solve these equations to find the values of F and R.

Solving the Equations

Substituting the value of R from equation 1 into equation 2, we get: 158 + 12 = F F = 170

Now we know that the number of friends is 170.

Calculating the Total Number of Spectators

To calculate the total number of spectators, we need to add the number of friends, relatives, and acquaintances.

Let's assume the number of acquaintances is A.

The total number of spectators is given by the equation: Total Spectators = F + R + A

Substituting the known values, we get: Total Spectators = 170 + 158 + 40 Total Spectators = 368

Conclusion

Based on the given information, there will be a total of 368 spectators at the swimming competition. Since the swimming pool has 380 spectator seats, there will be enough space for the acquaintances, as there are still 12 seats available.

Please let me know if there is anything else I can help you with!