путешественник 3 ч ехал на автобусе и 3 ч на поезде преодолев за это время путь в 390 км нйдите скорость автобуса если она второе меньше скорости поезда

Переведите пожалуйста на русский. 3)I find your willingness to acknowledge our claim quite interesting. 4)Optimization of process speed adds to cost reduction. 5)Their containers seem to be superb but we know nothing of their durability.

Перевести на русский: 6) The goods are to be delivered by the seller and accepted by the customer in proper quantity. 7) We will discuss the terms of the contract with our new carrier. 8) Do not expect us to give you money back for those faulty trays.

решите уравнения  0.6[y-3]-0.5[y-1]=1.5