How old was Eugene Paton when he headed the desig and construction of the first boltless brudge in Kyiv?​

Ответ:

Evgeny Paton was 70 years old when he headed the design and construction of the first boltless bridge in Kiev

Объяснение: Е.Патон родись в 1870г.

А начало строительства в 1940г.

1940г – 1870г = 70 лет