IOM 2016, Блиц — Задача 74
Olympiad of Metropolises, Moscow. Blitz Contest, September, 5 · 5 септември 2016 г.
Условие
A helicopter travels between two cities daily, and its normal speed in either direction is 120 km/h.
However, on a windy day, its average speed was 140 km/h in one direction and 100 km/h in the other direction, so the entire trip was 15 minutes longer than usual.
What is the distance between the two cities in kilometers?
Решение
Внимание: Непълно решение
В архива няма официално решение на тази задача.
Оригинал в Архива: blitz.pdf