How many times do they lose on the way, using a movable block to lift loads?

When using a movable block, we win in strength 2 times, but at the same time we lose on the way by the same 2 times.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.