Question

1 труба заполняет бассейн за 24 минуты, а вторая - за 40 минут. За сколько минут они наполнят бассейн, если будут работать вместе?

Answer 1

Скорость первой трубы- 1/24 басс/мин
Скорость второй трубы - 1/40 басс/мин
Скорость совместная - 1/24+1/40= 1/15 басс/мин
1:1/15=15 - за 15 минут

Answer 2

Solution:

Let's calculate the time it will take for both pipes to fill the pool when working together.

First, we need to find the rates at which each pipe fills the pool. We can use the formula: rate = 1 / time.

- The first pipe fills the pool in 24 minutes, so its rate is 1/24. - The second pipe fills the pool in 40 minutes, so its rate is 1/40.

Now, we can add their rates to find the combined rate when they work together: combined rate = rate of first pipe + rate of second pipe.

combined rate = 1/24 + 1/40.

Let's calculate the combined rate.

Calculation:

combined rate = 1/24 + 1/40 = 5/120 + 3/120 = 8/120 = 1/15.

Now, we can find the time it will take for both pipes to fill the pool together using the formula: time = 1 / combined rate.

Calculation:

time = 1 / (1/15) = 15 minutes.

Answer:

So, when both pipes work together, they will fill the pool in 15 minutes.