Question

Реши задачу одна бригада рабочих может посадить 600 деревьев за 10 дней а другая за 15 дней за сколько дней могут посадить эти деревья обе бригады работая вместе

Answer 1

1. 600 / 10 = 60 первая бригада за 1 день
2. 600 / 15 = 40 вторая бригада за 1 день
3. 600 / ( 60 + 40 ) = 6
Ответ: за 6 дней

Answer 2

Problem Analysis

To solve this problem, we can use the concept of "work done" to find the combined rate at which both teams work together. Then, we can use this combined rate to calculate the time required for both teams to plant the trees together.

Solution

Let's start by finding the individual rates at which each team works.

The first team can plant 600 trees in 10 days, so their rate of work is: - Team 1's rate: 600 trees / 10 days = 60 trees per day

The second team can plant 600 trees in 15 days, so their rate of work is: - Team 2's rate: 600 trees / 15 days = 40 trees per day

Now, we can find the combined rate at which both teams work together: - Combined rate: Team 1's rate + Team 2's rate = 60 trees per day + 40 trees per day = 100 trees per day

Finally, we can use the combined rate to calculate the time required for both teams to plant the trees together: - Time required: Total trees / Combined rate = 600 trees / 100 trees per day = 6 days

Answer: Both teams, working together, can plant the trees in 6 days.

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