The little caterpillar reaches the treetop on Wednesday afternoon at 5:48 p.m.
The caterpillar only crawls during daylight hours (from 7:00 a.m. to 7:00 p.m.). In these 12 hours, it covers a distance of 5 meters. The second half of the day, it sleeps while slipping down 1 meter. The small caterpillar crawls 4 meters up the tree within a 24 hours total (5-1). After two days, on Wednesday morning at 7:00 a.m., it is located 8 meters high in the tree. To finally reach the treetop in 12.5 meters, it still has to cover a distance of 4.5 meters. As the little caterpillar crawls 5 meters within 12 hours, it consequently needs 10 hours and 48 minutes for the remaining 4.5 meters (see calculation below). Finally, the caterpillar reaches its goal on Wednesday afternoon at 5:48 p.m.
5 meters = 12 hours / :5
1 meter = 2.4 hours / x 4.5
4.5 meters = 10.8 hours ( = 10 hours and 48 minutes)