Question

Слесарь и его ученик изготовил 1200 дет.Ученик сделал 30%дет.Сколько дет.сделал слесарь.

Answer 1

100%=1200 (уч.)
1)100%-30%=70%
Ответ: 70% сделал слесарь.

Answer 2

Calculation of the Number of Parts Made by the Locksmith and His Apprentice

To calculate the number of parts made by the locksmith and his apprentice, we can use the following approach:

Let's assume the total number of parts made is represented by T. The apprentice made 30% of the total parts, which can be represented as 0.30T. The locksmith made the remaining parts, which can be represented as (1 - 0.30)T.

Now, we can calculate the number of parts made by the locksmith using the given information.

Calculation

Given: Total number of parts made = 1200 Apprentice's share = 30%

Using the above information, we can calculate the number of parts made by the locksmith:

Total number of parts made = Parts made by the apprentice + Parts made by the locksmith

1200 = 0.30x + (1 - 0.30)x

Where: x = Total number of parts made by the locksmith

Now, let's solve for x:

1200 = 0.30x + 0.70x 1200 = x

So, the locksmith made 1200 parts.

Conclusion

The locksmith made 1200 parts.