Question

В школу из за болезни не ходят 9 четвероклассников это составляет 3/19 всех учащихся четвёртых классов для экскурсионной поездки был заказан автобус в котором 45 посадочных мест хватит ли мест учащимся если болеющие ученики на экскурсию не поедут ? Решите пожалуйста задание действиями

Answer 1

Решение:
9 учащихся  - это три равные части из девятнадцати частей во всём количестве детей, тогда 
1) 9:3=3 (ученика) - в одной части
2) 3·19=57 (учащихся) во всех четвёртых классах
3) 57-9=48 (учащихся) здоровы, готовы к поездке
4) 45 меньше 48, заказанных мест будет мало.
Ответ: посадочных мест не хватит.

Answer 2

Problem Analysis

To solve this problem, we need to determine if there will be enough seats on the bus for the students if the 9 sick fourth graders do not go on the excursion. We know that 9 out of 19 fourth graders are sick and that there are 45 seats on the bus.

Solution

First, let's calculate the total number of fourth graders in the school.

Total number of fourth graders: 19 (total fraction parts) * 9 (total students) = 171 fourth graders

Next, we need to find out how many fourth graders will be going on the excursion.

Number of fourth graders going on the excursion: 19 (total fraction parts) - 9 (sick students) = 10 fourth graders

Now, we can determine if there are enough seats on the bus for the students going on the excursion.

Number of seats on the bus: 45 seats

Number of fourth graders going on the excursion: 10 students

Calculation

To find out if there are enough seats on the bus, we'll compare the number of students going on the excursion with the number of seats on the bus.

Comparison: 10 (students) <= 45 (seats)

Conclusion

There are enough seats on the bus for the students going on the excursion, even if the 9 sick students do not go.

Therefore, the students will have enough seats on the bus for the excursion.

I hope this helps! If you have further questions or need additional assistance, feel free to ask.