Question

Через одну трубу бассейн наполняется за 12 часов а через другую за 18 часов через какую трубу нальется воды больше: через первую за 5 часов или через вторую за 7 часов?

Answer 1

Чр 1 больше на 94 раза

Answer 2

Problem Analysis

We have two pipes, one of which can fill a pool in 12 hours and the other in 18 hours. We need to determine which pipe will fill the pool with more water: the first pipe in 5 hours or the second pipe in 7 hours.

Solution

To solve this problem, we need to compare the rates at which each pipe fills the pool. The rate at which a pipe fills the pool is inversely proportional to the time it takes to fill the pool. In other words, the faster a pipe fills the pool, the higher its rate.

Let's calculate the rates at which each pipe fills the pool:

- The first pipe fills the pool in 12 hours, so its rate is 1/12 of the pool per hour. - The second pipe fills the pool in 18 hours, so its rate is 1/18 of the pool per hour.

Now, let's calculate the amount of water each pipe will fill in the given time periods:

- The first pipe will fill 5/12 of the pool in 5 hours. - The second pipe will fill 7/18 of the pool in 7 hours.

Answer

Comparing the amounts of water filled by each pipe in the given time periods, we find that the first pipe will fill more water in 5 hours than the second pipe will fill in 7 hours.

Therefore, the first pipe will fill more water in 5 hours than the second pipe will fill in 7 hours.