Question 12
A central leafy tree is surrounded by two bare trees and two palms.
A monkey takes 3 seconds between the center and any other tree, 2 seconds between a bare tree and a palm in either direction, and 7 seconds between the two bare trees or the two palms. The five trees have different labels P, Q, R, S, T. The monkey visits P, Q, S, R, T, R, P in that order. Which labels can occupy the center if the total travel time is as small as possible?
A monkey takes 3 seconds between the center and any other tree, 2 seconds between a bare tree and a palm in either direction, and 7 seconds between the two bare trees or the two palms. The five trees have different labels P, Q, R, S, T. The monkey visits P, Q, S, R, T, R, P in that order. Which labels can occupy the center if the total travel time is as small as possible?