Question

люда может собрать клубнику за 20мин,а наташа за 30 мин за сколько минут люда и наташа соберут Клубнику.,если они будут работать вместе

Answer 1

30+20=50
Или
30>20
Как-то так

Answer 2

30-20=10 (мин.)
Ответ: они соберут клубнику за 10 минут

Answer 3

Problem Analysis

We are given that Lyuda can pick strawberries in 20 minutes, while Natasha can pick strawberries in 30 minutes. We need to determine how long it will take for Lyuda and Natasha to pick strawberries together.

Solution

To solve this problem, we can use the concept of work rates. The work rate is the amount of work done per unit of time. In this case, the work is picking strawberries, and the time is measured in minutes.

Let's assume that the total amount of work to be done is picking one unit of strawberries. Since Lyuda can pick strawberries in 20 minutes, her work rate is 1/20 units of strawberries per minute. Similarly, Natasha's work rate is 1/30 units of strawberries per minute.

When Lyuda and Natasha work together, their work rates are additive. Therefore, the combined work rate is 1/20 + 1/30 units of strawberries per minute.

To find the time it takes for them to pick one unit of strawberries together, we can use the formula:

Time = 1 / (Combined work rate)

Let's calculate the time it will take for Lyuda and Natasha to pick strawberries together.

Calculation

The combined work rate is 1/20 + 1/30 units of strawberries per minute.

1/20 + 1/30 = 3/60 + 2/60 = 5/60 = 1/12 units of strawberries per minute.

Therefore, it will take Lyuda and Natasha 12 minutes to pick strawberries together.

Answer

Lyuda and Natasha will be able to pick strawberries together in 12 minutes.