Question

5 экскаваторов за 10 часов выкапывают 10 метров канавы. Сколько экскаваторов выкопают 35 метров канавы за 35 часов?

Answer 1

Задача с подвохом. Суть в том, что скорость выполнения работ не менялась. И те же 5 экскаваторов выкопают 35 метров за 35 часов. Ответ: 5 экскаваторов выкопают 35 метров за 35 часов.

Answer 2

Given Information:

- 5 excavators can dig a 10-meter trench in 10 hours. - The task is to determine how many excavators are needed to dig a 35-meter trench in 35 hours.

Calculation:

To find the number of excavators needed to dig a 35-meter trench in 35 hours, we can use the concept of proportionality. Since the amount of work (digging a trench) is directly proportional to the number of excavators and the time taken, we can set up the following proportion:

5 excavators : 10 hours = x excavators : 35 hours

To solve for x, we can cross-multiply and then divide:

5 * 35 = 10 * x

175 = 10x

x = 175 / 10

x = 17.5

Since we cannot have a fraction of an excavator, we need to round up to the nearest whole number. Therefore, we would need 18 excavators to dig a 35-meter trench in 35 hours.

Answer:

To dig a 35-meter trench in 35 hours, you would need 18 excavators.