42% или 42.857142857142854
1)100 минут мастер тратит на 50 деталей на 1 деталь мастер тратит100/50= 2 минуты значит ученик тратит две минуты на деталь
2) на 50 деталей ученик потратит 1ч40мин*2=200 минут значит на одну деталь потратит 200/50=4 минуты
55.
Fucid75ryutsutcjgcfihfhfihfihfiydihfig and that I know the details in English speaking about this weekend or not sure I don't like that but we should go see her at least I am so excited about that too but we need anything about me when ur day at home from my parents were a good thing to keep
9% или 9 сотых получается