MathDB

8.1

Part of 1999 All-Russian Olympiad Regional Round

Problems(1)

father and two sons visit grandmother - All-Russian MO 1999 Regional (R4) 8.`

Source:

9/25/2024
A father and two sons went to visit their grandmother, who Raya lives 3333 km from the city. My father has a motor roller, the speed of which 2525 km/h, and with a passenger - 2020 km/h (with two passengers on a scooter It’s impossible to move). Each of the brothers walks along the road at a speed of 55 km/h. Prove that all three can get to grandma's in 33 hours
algebracombinatorics