Question

Задача, помогите с решением пожалуйста..На изготовление некоторого количества одинаковых деталей первый станок-автомат тратит 3,5 мин, а второй 5 мин. Сколько деталей в минуту изготавливает второй станок, если первый станок изготавливает 20 деталей в минуту?

Answer 1

20*3,5=70 дет изготавливают
70:5=14 дет в минуту изготавливает второй станок

Answer 2

Problem Analysis

We are given two machines, the first machine takes 3.5 minutes to produce a certain quantity of identical parts, and the second machine takes 5 minutes to produce the same quantity of parts. We need to determine how many parts the second machine produces per minute if the first machine produces 20 parts per minute.

Solution

To solve this problem, we can use the concept of rates. The rate at which the first machine produces parts is 20 parts per 3.5 minutes. We can find the rate at which the second machine produces parts per minute by setting up a proportion.

Let's denote the rate at which the second machine produces parts per minute as x. We can set up the following proportion:

20 parts / 3.5 minutes = x parts / 1 minute

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

20 * 1 = 3.5 * x

Simplifying the equation:

20 = 3.5x

Dividing both sides by 3.5:

x = 20 / 3.5

Evaluating the expression:

x ≈ 5.71

Therefore, the second machine produces approximately 5.71 parts per minute.

Answer

The second machine produces approximately 5.71 parts per minute.