Question

Бригада укладчиков должна была за месяц уложить 100 километров железной дороги за месяц. За первую декаду (10 дней) бригада уложила 30 километров пути, а за вторую декаду - 36 километров. Объясни, что обозначает каждое выражение. 100 - 30, 30+36, 36 - 30, 100 - (30 + 36), 30:10. Помогите пожалуйста, даю 35 баллов!

Answer 1

100-30- остаток после первой декады
30+36-первая и вторая декада 
36-30-разница между первой и второй декадой
100-(30+36)-остаток после двух декад
30÷10-средняя производительность труда за день в первой декаде

Answer 2

Explanation of Expressions

The given expressions are as follows: - 100 - 30 - 30 + 36 - 36 - 30 - 100 - (30 + 36) - 30 : 10

Let's break down each expression:

1. 100 - 30: This expression represents the remaining distance to be laid after the first ten days. 2. 30 + 36: This expression represents the total distance laid by the brigade in the first two decades. 3. 36 - 30: This expression represents the additional distance laid by the brigade in the second decade compared to the first decade. 4. 100 - (30 + 36): This expression represents the remaining distance to be laid after the first two decades. 5. 30 : 10: This expression represents the average distance laid per day by the brigade in kilometers.

Calculation

Let's calculate the values of these expressions based on the given information:

1. 100 - 30 = 70 2. 30 + 36 = 66 3. 36 - 30 = 6 4. 100 - (30 + 36) = 34 5. 30 : 10 = 3

Conclusion

Based on the given information, after the first ten days, the brigade has 70 kilometers remaining to lay, and after the second ten days, they have 34 kilometers remaining. The brigade laid 30 kilometers in the first ten days and 36 kilometers in the second ten days. The average distance laid per day is 3 kilometers.

I hope this helps! If you have any further questions, feel free to ask.