Question

В соревнования участвовало 36 девочек.Они составляли 2/5 всех участников.Сколько мальчиков участвовало в соревнованиях СРОЧНО!!!!!!!

Answer 1

Решение:
1)36:2=18 (человек) - 1\5 участников соревнования
2)18×5=90 (человек) - всего участвовало
3) 1-2\5=3\5 (часть) - мальчиков
4)90×3\5=54 (человека) - мальчиков
Ответ: 54 мальчика

Answer 2

36:2=18 18х3=54 мальчиков

Answer 3

Calculating the Number of Boys in the Competition

To calculate the number of boys who participated in the competition, we can use the information provided about the number of girls and the total number of participants.

Given: - The competition had 36 girls, which constituted 2/5 of all participants.

We can calculate the total number of participants and then determine the number of boys.

Calculation

Let's denote the total number of participants as T.

According to the given information, the 36 girls constitute 2/5 of all participants. This can be represented as an equation:

36 = (2/5) * T

To find the total number of participants, we can solve for T:

T = 36 / (2/5)

T = 36 * (5/2)

T = 90

So, the total number of participants in the competition is 90.

Now, to find the number of boys, we can subtract the number of girls from the total number of participants:

Number of boys = Total participants - Number of girls

Number of boys = 90 - 36

Number of boys = 54

Answer

There were 54 boys who participated in the competition.