Question

Пожалуйста! Помогите с задачей. В 9 часов утра на стадионе было 24 человека, из которых часть играли в футбол, а часть-в баскетбол. Затем шесть из игравших в футбол ушли со стадиона, а два человека игравших в баскетбол, пошли играть в футбол. В результате играющих в футбол стало в два раза больше, чем играющих в баскетбол. Сколько человек играли в футбол в 9 часов утра?

Answer 1

Без икс. _______В 9утра=24чел всего; ушло 6футб; 1) 24-6= 18осталось всех; и 2перешли в футбол; стало 2части футбол и 1ч баскетбол =18чел это три части; 2)) 18:3=6чел это 1часть баскетбол стало и 3)) 6•2=12чел футбол стало; теперь обратно считаем 4)) 12-2=10чел футбол без тех что перешли 2; 5)) 10+6=16чел футбол было до того как ушли 6чел из стадиона; 24-16=8чел было баскетброл. Ответ: в 9утра было 16 чел играли в футбол и 8чел в баскетбол. решаем  уравнением; футболисты=Х; баскетбол=У; {Х+У=24; стало (Х-6+2)=2(у-2)}; Х-4=2у-4; Х=2у-4+4; Х=2у; подставляем 2у+у=24; 3у=24; у=24:3; у=8; =» Х+у=24; х=24-у; х=24-8; х=16. Ответ: 16 играли в футбол в 9утра и 8 в баскетбол.

Answer 2

Problem Analysis

We are given that at 9 o'clock in the morning, there were 24 people at the stadium, some playing football and some playing basketball. Six of those who were playing football left the stadium, and two of those who were playing basketball started playing football. As a result, the number of people playing football became twice the number of people playing basketball. We need to determine how many people were playing football at 9 o'clock in the morning.

Solution

Let's assume that the number of people playing basketball at 9 o'clock in the morning is x. Since the number of people playing football became twice the number of people playing basketball after two basketball players started playing football, the number of people playing football at 9 o'clock in the morning is 2x.

We can set up an equation based on the given information:

24 - 6 + 2 = 2x

Simplifying the equation:

20 = 2x

Dividing both sides of the equation by 2:

x = 10

Therefore, there were 10 people playing basketball and 20 people playing football at 9 o'clock in the morning.

Answer

At 9 o'clock in the morning, there were 20 people playing football.