GAUSS7 2009 Problem 11

Scott challenges Chris to a 100\:m race. Scott runs 4\:m for every 5\:m that Chris runs. How far will Scott have run when Chris crosses the finish line?

Answer Choices
A. 75\:m
B. 96\:m
C. 20\:m
D. 76\:m
E. 80\:m