To make a part, 0.7 copper is needed. How many parts will be obtained from 3.836 kg of copper?

Firstly, since different units of mass measure appear in the condition of this problem, it is necessary to write down a ratio that will help us in translation:

1 kg = 1000 g.

Now, for the convenience of further calculations, we will translate the amount of copper available from us from kg to g:

3.836 kg = (3.836 * 1000) g = 3836 g.

Considering that 0.7 g of copper is needed for the manufacture of 1 part, we calculate how many parts will be obtained from 3.836 kg of copper:

3836: 0.7 = 5480 (parts).

Answer: from 3.836 kg of copper, you get 5480 parts.