Based on the graph shown, how many vehicles had an average speed of at least 80 \mathrm{~km} / \mathrm{h} ?
Answer Choices
A. 45
B. 15
C. 35
D. 70
E. 50
Based on the graph shown, how many vehicles had an average speed of at least 80 \mathrm{~km} / \mathrm{h} ?
Answer Choices
A. 45
B. 15
C. 35
D. 70
E. 50