Problem P. 4818. (March 2016)
P. 4818. Hansel and Gretel live at a distance of 250 metres from each other. They both leave the house at half past seven in the morning. Gretel walks at a speed of 1.1 m/s towards the school. Hansel - since he lives further - walks at a speed of 1.5 m/s. Hansel just catches up with Gretel at the school-gate. How far does Gretel live from the school? At what time did they enter the school?
Deadline expired on April 11, 2016.
105 students sent a solution. 3 points: 79 students. 2 points: 20 students. 1 point: 6 students.