PASCAL 2015 Problem 8

Jitka hiked a trail. After hiking 60\% of the length of the trail, she had 8\:km left to go. What is the length of the trail?

Answer Choices
A. 28\:km
B. 12.8\:km
C. 11.2\:km
D. 13\frac13\:km
E. 20\:km