A cyclist travels at a constant speed of 22.0 \mathrm{~km} / \mathrm{hr} except for a 20 minute stop. The cyclist’s average speed was 17.5 \mathrm{~km} / \mathrm{hr}. How far did the cyclist travel?
Answer Choices
A. 28.5 \mathrm{~km}
B. 30.3 \mathrm{~km}
C. 31.2 \mathrm{~km}
D. 36.5 \mathrm{~km}
E. 38.9 \mathrm{~km}