Question

Билет 9 Мастер до обеда изготовил 40 деталей,а после обеда 15 деталей. Сколько часов он проработал,если делал по 6 деталей в час?

Answer 1

40+15=55
60:6=10 мин на 1 дет
55:6 =54+1:6=9ч10 минут

Answer 2

Problem Analysis

We are given the following information: - The master produced 40 parts before lunch. - The master produced 15 parts after lunch. - The master produced 6 parts per hour.

We need to determine how many hours the master worked.

Solution

To find the number of hours the master worked, we can use the formula:

Number of hours = Total number of parts / Number of parts produced per hour

Let's calculate the total number of parts produced by the master:

Total number of parts = Number of parts before lunch + Number of parts after lunch

Substituting the given values:

Total number of parts = 40 + 15

Total number of parts = 55

Now, let's calculate the number of hours the master worked:

Number of hours = Total number of parts / Number of parts produced per hour

Substituting the given values:

Number of hours = 55 / 6

Calculating the result:

Number of hours = 9.1667

Therefore, the master worked for approximately 9.17 hours.

Answer

The master worked for approximately 9.17 hours.